Carburetor Kit with Air Filter for Briggs & Stratton 300E 450E 500E 08P502 09P602 Series Engines, Replace 593261 595656 591979 591160, Includes Fuel Filter, Primer Bulb

What It Is

This is a complete carburetor replacement kit with air filter, fuel filter, and primer bulb designed for Briggs & Stratton 300E, 450E, and 500E push mower engines (models 08P502, 09P602, and similar). It restores fuel delivery and airflow on older or clogged carburetors.

Fitment & Compatibility

• Engine series: Fits Briggs & Stratton 300E, 450E, 500E, plus 08P502 and 09P602 series engines. Also fits some 550E, 625E, and 675E models with the same carburetor pattern.
• OEM part numbers: Replaces 593261, 595656, 591979, and 591160. Cross-check your engine’s parts list.
• What to measure: Carburetor mounting bolt spacing (2.75” center-to-center) and air filter housing shape. The kit’s air filter is flat rectangular (approx. 5” x 3.5”) – verify your housing accepts this.
• Brand/model: Works on most Briggs-powered Craftsman, MTD, Troy-Bilt, Snapper, and Husqvarna push mowers from the 2010s onward. Not for vertical shaft engines or riding mowers.

Key Things to Know

• Quality: Aftermarket kit – fine for occasional use, but the carburetor may need minor adjustment (idle screw) out of the box. Gaskets are thin; use OEM if you want longer life.
• Installation difficulty: Moderate. You’ll need a socket set, screwdriver, and carb cleaner. Expect 30–60 minutes. The primer bulb and fuel filter are easy swaps.
• Common gotchas: The new carburetor may leak if the bowl gasket isn’t seated perfectly. Also, the air filter may be slightly thicker than OEM – check clearance with the cover. Fuel line diameter matches most standard 1/4” lines, but verify your existing line isn’t brittle.
• What’s included: Carburetor, air filter, fuel filter, primer bulb, gaskets, and mounting hardware. No spark plug or oil – you’ll need those separately for a full tune-up.

Should You Buy It

Buy this if your Briggs 300E–500E mower won’t start or runs rough after sitting for a season, and you want a budget-friendly one-stop kit for a carburetor swap. Skip it if you only need a simple fuel filter or air filter replacement (buy those individually for less), or if you prefer OEM reliability for heavy commercial use.