Honda Replacement Filters for GX Engines

A clogged air filter chokes a Honda GX slowly. First you lose a little power, then the engine runs rich, fouls the plug, and starts eating carburetor parts. A few dollars of filter foam prevents all of it. Sun Brite Supply carries Honda replacement filters for the GX160 through GX390 engines that power most pressure washers. Call 301-519-9274 to check availability before you head over.

Matching Filters to Your Honda GX Engine

Honda GX engines use a two-stage air cleaner: a pleated paper element inside and a foam pre-filter wrapped around it. The foam catches the coarse debris and grass dust, the paper stops the fine stuff. The pre-filter is sized to the engine family, so grab the one that matches your block: GX160-200 foam pre-filter for 5 to 6.5 HP machines, GX240-270 pre-filter for 8 to 9 HP, and GX340-390 pre-filter for the 11 and 13 HP engines on most contractor rigs. Each runs $5.37. The paper replacement air filter is $14.54.

Service rhythm matters as much as the part. Honda's schedule says check the filter before each use, clean it around every 50 hours, and replace the paper element yearly or at 300 hours. Pressure washing is dirtier than that schedule assumes. Surface cleaning kicks up grit all day, so crews doing flatwork should knock the foam out weekly. Wash the foam in warm soapy water, let it dry fully, work in a spoonful of clean engine oil, and squeeze out the extra. Never oil the paper element, and never run the engine with no filter even for a quick test.

Related Collections

• Honda parts for the rest of the engine
• Engine air filters for all brands
• Briggs replacement filters
• Air cleaner assemblies for cracked housings
• Fuel filters and carburetor components
• Recoil start assemblies
• All engine parts
• Visit the Gaithersburg store and we will match the filter to your engine

Frequently Asked Questions

How often should I replace the air filter on a Honda GX engine?

Clean it about every 50 hours and replace the paper element yearly or at 300 hours. On dusty work like surface cleaning, clean the foam pre-filter weekly and inspect the paper more often.

Which foam pre-filter fits my pressure washer?

Match it to the engine family stamped on the block: GX160-200 for small machines, GX240-270 for mid-size, GX340-390 for 11 to 13 HP contractor rigs. Not sure? Call with the engine model and we will confirm.

Should the foam pre-filter be oiled?

Yes. After washing and drying it, work in a little clean engine oil and squeeze out the excess. The oil is what grabs fine dust. Leave the paper element inside it dry.

What happens if I keep running a dirty filter?

The engine runs rich, loses power, smokes, and fouls plugs. Left long enough, dirt gets past the filter and wears the cylinder. A $15 filter is the cheapest engine insurance you can buy.