{"title":"Muffler Accessories","description":"\u003ch2\u003eMuffler Accessories\u003c\/h2\u003e\n\u003cp\u003eProfessional-grade equipment and supplies at Sun Brite Supply — Gaithersburg, MD\u003c\/p\u003e","products":[{"product_id":"muffler-protector-gx390","title":"Muffler Protector Gx390","description":"\u003cdiv class=\"sbs-content\"\u003e\n\u003cdiv class=\"sbs-svc-banner sbs-svc-banner--service\"\u003e\n\u003cspan class=\"sbs-svc-banner__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-svc-banner__body\"\u003e\n\u003cdiv class=\"sbs-svc-banner__title\"\u003eContractor Favorite For: Protecting GX390 Engine Mufflers\u003c\/div\u003e\n\u003cdiv class=\"sbs-svc-banner__desc\"\u003eGuard that shields the muffler on GX390-powered pressure washers from knocks and contact.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eMuffler Protector for GX390 - Keeps a Hot Muffler Guarded\u003c\/h2\u003e\n\u003cp\u003eThis muffler protector fits the GX390, the workhorse engine on plenty of contractor pressure washers. It guards the muffler from knocks around the rig and helps keep hands, hoses, and gear off hot metal.\u003c\/p\u003e\n\u003cp\u003eIt's cheap insurance on a machine that lives on a trailer. If your current protector is rusted through or missing, replace it before the muffler itself starts taking the abuse. In stock at Sun Brite Supply in Gaithersburg, MD.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\u003ch2\u003eWhere Contractors Use This Muffler Protector\u003c\/h2\u003e\u003c\/div\u003e\n\u003cdiv class=\"sbs-cards sbs-cards--2col\"\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eGX390 Engine Service\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eA standard replacement piece when tuning up or rebuilding GX390-powered rigs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🏢\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eTrailer Rig Protection\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eShields the muffler from bumps and gear shifting around on a packed trailer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eIn-Stock Ready\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eShips within 24 hours from our Gaithersburg, MD warehouse.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e☎️\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eBurn Prevention\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eKeeps hoses, cords, and hands off hot muffler metal during a long work day.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eApplication and Compatibility\u003c\/h2\u003e\n\u003cp\u003eProfessional pressure washing equipment demands components built for daily commercial abuse. Consumer-grade substitutes fail under the pressures, temperatures, and chemical exposure that contractor rigs operate in. This part is designed for that environment - built to perform under load, day after day. If you're not sure about compatibility, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e - we match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eContractor-Grade Quality\u003c\/h2\u003e\n\u003cp\u003eThere's a real difference between professional equipment and consumer-grade alternatives sold at hardware stores. Consumer parts are built to a price point - they work fine for the homeowner who pressure washes their deck once a year. But put those same parts on a commercial rig running 8 hours a day, 5 days a week, and they fail fast. This pressure washer part is built for that daily grind. The materials, tolerances, and construction are designed for thousands of hours of commercial operation. That's why contractors come to Sun Brite Supply instead of buying online from unknown vendors - we carry the brands and specs that working professionals trust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-steps\"\u003e\n\u003ch2\u003eInstallation and Setup\u003c\/h2\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eVerify Compatibility\u003c\/h4\u003e\n\u003cp\u003eCheck the specifications against your existing equipment. Thread sizes, pressure ratings, and flow capacities must match for safe operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eInstall According to Specs\u003c\/h4\u003e\n\u003cp\u003eFollow the manufacturer's installation guidelines. Use appropriate thread sealant on pipe connections. Don't overtighten fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eTest Under Pressure\u003c\/h4\u003e\n\u003cp\u003eAfter installation, test at low pressure first. Check all connections for leaks before running at full operating pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--tip\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e💡\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Keep spare parts on your rig. The cost of downtime on a commercial job always exceeds the cost of carrying a few critical replacement components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--warning\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e⚠️\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Always verify pressure ratings, thread sizes, and flow specifications match your existing system before installation. Using components rated below your machine's operating pressure creates a safety hazard. When in doubt, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-compat\"\u003e\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cdiv class=\"sbs-compat__grid\"\u003e\n\u003cspan class=\"sbs-compat__tag\"\u003eGX390 Engines\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eGas-Powered Pressure Washers\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eTrailer and Skid Rigs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-table-wrap\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"sbs-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eEngine Muffler Protector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShips From\u003c\/td\u003e\n\u003ctd\u003eGaithersburg, MD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eMaintenance and Troubleshooting\u003c\/h2\u003e\n\u003cp\u003eKeep the part clean and stored in a dry environment when not in use. Exposure to moisture, chemicals, and UV light degrades materials over time. Carry spares on your rig for critical components.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace vs. Repair\u003c\/h3\u003e\n\u003cp\u003eIf this pressure washer part shows signs of wear but is still functional, a rebuild kit or replacement seals may extend its service life at a fraction of the full replacement cost. However, if you see cracks, cross-threading, severe corrosion, or complete failure under pressure, replacement is the safer and more economical choice. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll help you decide. Always follow \u003ca href=\"https:\/\/www.osha.gov\/pressure-washing\" rel=\"noopener\" target=\"_blank\"\u003eOSHA equipment safety standards\u003c\/a\u003e when working with high-pressure equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is this muffler protector used for?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIt covers the muffler on GX390 engines, protecting it from impacts and keeping hoses, cords, and hands off hot metal. It's a common replacement part on gas-powered contractor rigs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eIs this pressure washer part compatible with my pressure washer?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eCheck the specifications above against your machine's requirements. Thread sizes, pressure ratings, and flow capacities must match. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e if you need help with fitment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eHow quickly do you ship orders?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIn-stock items ship within 24 hours from our Gaithersburg, MD warehouse. Local customers can arrange same-day counter pickup. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e to confirm availability and get a shipping estimate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is your return policy?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eUnopened and unused items can be returned within 30 days for store credit. If something arrives damaged or isn't what you expected, call us at \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll make it right.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-cta\"\u003e\n\u003cdiv class=\"sbs-cta__text\"\u003e\n\u003ch3\u003eNeed Help Choosing the Right Part?\u003c\/h3\u003e\n\u003cp\u003e30+ years of industry experience. We match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca href=\"tel:+13015199274\" class=\"sbs-cta__phone\"\u003e☎ (301) 519-9274\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-related\"\u003e\n\u003ca href=\"\/collections\/all\"\u003eShop All Products\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/fittings\"\u003eFittings\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/accessories\"\u003eAccessories\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eWhy Buy From Sun Brite Supply?\u003c\/h2\u003e\n\u003cp\u003eSun Brite Supply has served pressure washing contractors from our Gaithersburg, MD location since 2011. We stock the professional-grade parts and equipment you won't find at big box stores. Every in-stock order ships within 24 hours. Local customers can pick up the same day. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and talk to someone who knows this equipment - not a call center.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--info\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eShipping \u0026amp; Returns:\u003c\/strong\u003e In-stock items ship within 24 hours from Gaithersburg, MD. Same-day counter pickup for local contractors. Unopened items may be returned within 30 days for store credit. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e with questions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032516976840,"sku":"3013","price":36.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/3013_3a2d1799-0c0c-4998-833a-3d10d5cb6563.jpg?v=1784853260"},{"product_id":"muffler-assy-w-elbow-gx160-200","title":"Muffler Assy W\/Elbow Gx160-200","description":"\u003cp\u003e\u003cstrong\u003eMuffler Assy W\/Elbow Gx160-200 - professional-grade replacement part. In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eMuffler Assy W\/Elbow Gx160-200 for commercial pressure washing equipment. Check your model number, port sizes, and pressure rating before ordering - or call us at 301-519-9274 and we will confirm fitment for your machine.\u003c\/p\u003e\u003ch2\u003eBefore You Order\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel number:\u003c\/strong\u003e check your equipment data plate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread and port sizes:\u003c\/strong\u003e measure your connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e match the part to your system PSI and GPM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Buy from Sun Brite Supply?\u003c\/h2\u003e\u003cp\u003eWe stock over 2,700 pressure washing parts, chemicals, and accessories in our Gaithersburg, Maryland warehouse. Most orders ship the same business day when placed before 2 PM Eastern. Call 301-519-9274 and talk to someone with over 50 years of combined pressure washing experience.\u003c\/p\u003e\u003ch2\u003eRelated Parts \u0026amp; Equipment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/engine-parts\"\u003eBrowse Engine Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pressure-washer-repair-parts\"\u003ePressure Washer Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/chemicals\"\u003eChemicals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032517075144,"sku":"5736","price":23.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/5741_01_web_24799a87-db63-4590-8d3f-7cb6411f8527.png?v=1776946429"},{"product_id":"muffler-assy-gx340-390","title":"Muffler Assy Gx340-390","description":"\u003cdiv class=\"sbs-content\"\u003e\n\u003cdiv class=\"sbs-svc-banner sbs-svc-banner--service\"\u003e\n\u003cspan class=\"sbs-svc-banner__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-svc-banner__body\"\u003e\n\u003cdiv class=\"sbs-svc-banner__title\"\u003eCommonly Used For: GX340 and GX390 Engine Service\u003c\/div\u003e\n\u003cdiv class=\"sbs-svc-banner__desc\"\u003eA complete replacement muffler assembly for rigs running GX340 and GX390 engines.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eMuffler Assembly for GX340-390 Engines - Quiets Down a Loud Rig\u003c\/h2\u003e\n\u003cp\u003eThis is a complete muffler assembly for GX340 and GX390 engines, the powerplants behind many commercial pressure washer skids. When the original can rusts out or the baffles rattle loose, this bolts on and brings the exhaust note back down. It's in stock at Sun Brite Supply in Gaithersburg, MD.\u003c\/p\u003e\n\u003cp\u003eA blown muffler makes a rig miserable to run and rough on your ears all day. Swapping the whole assembly beats patching a rusted can, and it's a quick job during a seasonal tune-up. If your GX340 or GX390 is getting loud, this is the fix.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\u003ch2\u003eWhere Contractors Use This Muffler Assembly\u003c\/h2\u003e\u003c\/div\u003e\n\u003cdiv class=\"sbs-cards sbs-cards--2col\"\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eGX Engine Service\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eReplace rusted or rattling mufflers on GX340 and GX390 powered rigs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🏢\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eQuieter Job Sites\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eBring the exhaust note down for early morning residential and HOA work.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eIn-Stock Ready\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eShips within 24 hours from our Gaithersburg, MD warehouse.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e☎️\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eSeasonal Tune-Ups\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eHandle exhaust, filters, and recoil in one service pass before the busy season.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eApplication and Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis component integrates into standard commercial pressure washing systems using industry-standard connections. Verify the specifications listed below against your existing equipment before ordering. Thread sizes, pressure ratings, and flow capacities must match your system for safe, leak-free operation. If you're not sure about compatibility, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e - we match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eContractor-Grade Quality\u003c\/h2\u003e\n\u003cp\u003eThere's a real difference between professional equipment and consumer-grade alternatives sold at hardware stores. Consumer parts are built to a price point - they work fine for the homeowner who pressure washes their deck once a year. But put those same parts on a commercial rig running 8 hours a day, 5 days a week, and they fail fast. This pressure washer part is built for that daily grind. The materials, tolerances, and construction are designed for thousands of hours of commercial operation. That's why contractors come to Sun Brite Supply instead of buying online from unknown vendors - we carry the brands and specs that working professionals trust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-steps\"\u003e\n\u003ch2\u003eInstallation and Setup\u003c\/h2\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eVerify Compatibility\u003c\/h4\u003e\n\u003cp\u003eCheck the specifications against your existing equipment. Thread sizes, pressure ratings, and flow capacities must match for safe operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eInstall According to Specs\u003c\/h4\u003e\n\u003cp\u003eFollow the manufacturer's installation guidelines. Use appropriate thread sealant on pipe connections. Don't overtighten fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eTest Under Pressure\u003c\/h4\u003e\n\u003cp\u003eAfter installation, test at low pressure first. Check all connections for leaks before running at full operating pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--tip\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e💡\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Keep spare parts on your rig. The cost of downtime on a commercial job always exceeds the cost of carrying a few critical replacement components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--warning\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e⚠️\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Always verify pressure ratings, thread sizes, and flow specifications match your existing system before installation. Using components rated below your machine's operating pressure creates a safety hazard. When in doubt, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-compat\"\u003e\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cdiv class=\"sbs-compat__grid\"\u003e\n\u003cspan class=\"sbs-compat__tag\"\u003eGX340 Engines\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eGX390 Engines\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eGas-Powered Skids\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-table-wrap\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"sbs-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eEngine Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShips From\u003c\/td\u003e\n\u003ctd\u003eGaithersburg, MD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eMaintenance and Troubleshooting\u003c\/h2\u003e\n\u003cp\u003eInspect this component during your regular maintenance routine. Check for wear, leaks, corrosion, and proper operation. Replacing worn parts on schedule prevents mid-job failures that cost you time and money.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace vs. Repair\u003c\/h3\u003e\n\u003cp\u003eIf this pressure washer part shows signs of wear but is still functional, a rebuild kit or replacement seals may extend its service life at a fraction of the full replacement cost. However, if you see cracks, cross-threading, severe corrosion, or complete failure under pressure, replacement is the safer and more economical choice. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll help you decide. Always follow \u003ca href=\"https:\/\/www.osha.gov\/pressure-washing\" rel=\"noopener\" target=\"_blank\"\u003eOSHA equipment safety standards\u003c\/a\u003e when working with high-pressure equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is this muffler assembly used for?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIt's a complete replacement muffler for GX340 and GX390 engines. When the factory muffler rusts through or starts rattling, this assembly bolts on to restore normal exhaust flow and bring the noise back down.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eIs this pressure washer part compatible with my pressure washer?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eCheck the specifications above against your machine's requirements. Thread sizes, pressure ratings, and flow capacities must match. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e if you need help with fitment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eHow quickly do you ship orders?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIn-stock items ship within 24 hours from our Gaithersburg, MD warehouse. Local customers can arrange same-day counter pickup. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e to confirm availability and get a shipping estimate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is your return policy?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eUnopened and unused items can be returned within 30 days for store credit. If something arrives damaged or isn't what you expected, call us at \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll make it right.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-cta\"\u003e\n\u003cdiv class=\"sbs-cta__text\"\u003e\n\u003ch3\u003eNeed Help Choosing the Right Part?\u003c\/h3\u003e\n\u003cp\u003e30+ years of industry experience. We match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca href=\"tel:+13015199274\" class=\"sbs-cta__phone\"\u003e☎ (301) 519-9274\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-related\"\u003e\n\u003ca href=\"\/collections\/all\"\u003eShop All Products\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/fittings\"\u003eFittings\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/accessories\"\u003eAccessories\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eWhy Buy From Sun Brite Supply?\u003c\/h2\u003e\n\u003cp\u003eSun Brite Supply has served pressure washing contractors from our Gaithersburg, MD location since 2011. We stock the professional-grade parts and equipment you won't find at big box stores. Every in-stock order ships within 24 hours. Local customers can pick up the same day. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and talk to someone who knows this equipment - not a call center.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--info\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eShipping \u0026amp; Returns:\u003c\/strong\u003e In-stock items ship within 24 hours from Gaithersburg, MD. Same-day counter pickup for local contractors. Unopened items may be returned within 30 days for store credit. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e with questions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is this muffler assembly used for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's a complete replacement muffler for GX340 and GX390 engines. When the factory muffler rusts through or starts rattling, this assembly bolts on to restore normal exhaust flow and bring the noise back down.\"}},{\"@type\":\"Question\",\"name\":\"Is this pressure washer part compatible with my pressure washer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Check the specifications above against your machine's requirements. Thread sizes, pressure ratings, and flow capacities must match. Call (301) 519-9274 if you need help with fitment.\"}},{\"@type\":\"Question\",\"name\":\"How quickly do you ship orders?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"In-stock items ship within 24 hours from our Gaithersburg, MD warehouse. Local customers can arrange same-day counter pickup. Call (301) 519-9274 to confirm availability and get a shipping estimate.\"}},{\"@type\":\"Question\",\"name\":\"What is your return policy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Unopened and unused items can be returned within 30 days for store credit. If something arrives damaged or isn't what you expected, call us at (301) 519-9274 and we'll make it right.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032517140680,"sku":"5741","price":67.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/5741_01_web_b25157f0-0d41-45a9-8f8c-f2cc3eb2d68c.png?v=1776946426"},{"product_id":"exhaust-pipe-gx240-270-340-390","title":"Exhaust Pipe Gx240-270-340-390","description":"\u003cp\u003e\u003cstrong\u003eExhaust Pipe Gx240-270-340-390 - professional-grade replacement part. In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eExhaust Pipe Gx240-270-340-390 for commercial pressure washing equipment. Check your model number, port sizes, and pressure rating before ordering - or call us at 301-519-9274 and we will confirm fitment for your machine.\u003c\/p\u003e\u003ch2\u003eBefore You Order\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel number:\u003c\/strong\u003e check your equipment data plate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread and port sizes:\u003c\/strong\u003e measure your connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e match the part to your system PSI and GPM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Buy from Sun Brite Supply?\u003c\/h2\u003e\u003cp\u003eWe stock over 2,700 pressure washing parts, chemicals, and accessories in our Gaithersburg, Maryland warehouse. Most orders ship the same business day when placed before 2 PM Eastern. Call 301-519-9274 and talk to someone with over 50 years of combined pressure washing experience.\u003c\/p\u003e\u003ch2\u003eRelated Parts \u0026amp; Equipment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/engine-parts\"\u003eBrowse Engine Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pressure-washer-repair-parts\"\u003ePressure Washer Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/chemicals\"\u003eChemicals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032537456840,"sku":"5749","price":22.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/05749_1a687282-ee7a-4cc7-b472-f6945d8abeb4.webp?v=1774232811"},{"product_id":"each-muffler-gasket-set-gx240-270-340-390","title":"Each Muffler Gasket Set Gx240-270-340-390","description":"\u003cp\u003e\u003cstrong\u003eEach Muffler Gasket Set Gx240-270-340-390 - professional-grade replacement part. In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eEach Muffler Gasket Set Gx240-270-340-390 for commercial pressure washing equipment. Check your model number, port sizes, and pressure rating before ordering - or call us at 301-519-9274 and we will confirm fitment for your machine.\u003c\/p\u003e\u003ch2\u003eBefore You Order\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel number:\u003c\/strong\u003e check your equipment data plate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread and port sizes:\u003c\/strong\u003e measure your connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e match the part to your system PSI and GPM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Buy from Sun Brite Supply?\u003c\/h2\u003e\u003cp\u003eWe stock over 2,700 pressure washing parts, chemicals, and accessories in our Gaithersburg, Maryland warehouse. Most orders ship the same business day when placed before 2 PM Eastern. Call 301-519-9274 and talk to someone with over 50 years of combined pressure washing experience.\u003c\/p\u003e\u003ch2\u003eRelated Parts \u0026amp; Equipment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/engine-parts\"\u003eBrowse Engine Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pressure-washer-repair-parts\"\u003ePressure Washer Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/chemicals\"\u003eChemicals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032538407112,"sku":"5807","price":7.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/05807_50f2bd3a-5682-40d0-b462-dd13a25c9955.webp?v=1774232853"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/collections\/muffler-accessories.png?v=1783353997","url":"https:\/\/sunbritesupplymd.com\/collections\/muffler-accessories.oembed","provider":"Sun Brite Supply","version":"1.0","type":"link"}