595660 Air Filter Cleaner Cover Replacement for Cover Air filter 799579 Kit 594281 Primer Bulb 08P602 09P602 MTD troy Bilt Engines Lawn Mower

What It Is

This is an aftermarket air filter cover assembly designed to replace the original cover on MTD and Troy-Bilt engines, commonly used on walk-behind lawn mowers. It also includes the primer bulb and filter kit, serving as a direct swap for worn or broken components that cause poor engine starting or air intake issues.

Fitment & Compatibility

Before buying, confirm your mower uses the OEM part numbers 595660, 799579, 594281, or 08P602/09P602. This cover fits many MTD, Troy-Bilt, Cub Cadet, and Yard Machines models with Briggs & Stratton or similar small engines (typically 140cc–190cc). Check the existing cover’s shape and mounting tabs—this replacement matches the rectangular style with a single central screw hole and a separate primer bulb port. Measure the cover’s length (approx. 4.5 inches) and verify the bulb fits snugly into the grommet. If your mower has a different air filter housing (e.g., round or with multiple screws), this will not fit.

Key Things to Know

• Quality: The aftermarket plastic is slightly thinner than OEM but durable enough for normal use. The primer bulb may feel stiffer initially.
• Installation: Easy—remove the old cover, swap the filter and bulb, then snap or screw the new cover into place. No tools required beyond maybe a screwdriver for the cover screw.
• Common gotcha: The included primer bulb may not match the original’s firmness; if it’s too hard, it won’t prime fuel properly. Test after installation and replace with an OEM bulb if needed.
• Filter compatibility: Works with standard foam or paper filters (like 799579), but double-check the filter size matches your engine’s air intake opening.

Should You Buy It

If your mower’s air filter cover is cracked, missing, or the primer bulb won’t seal, this is a budget-friendly fix that restores proper airflow and priming. It’s ideal for DIY owners of common MTD/Troy-Bilt models who want a quick replacement without buying a full OEM assembly. However, if you need exact OEM fit or a softer primer bulb, consider spending more on a genuine part.