799584 594058 Carburetor Kit Spark Plug & Air Filter Assembly Compatible with B&S Carb 594057 592361 594529 Troy Bilt TB110 TB200 103M02 09P702 9P702 550EX 625EX 675EX 725 lc121p 163cc

What It Is

This is a complete tune-up kit for Briggs & Stratton engines, combining a carburetor, spark plug, air filter, and fuel line into one package. It’s designed for push mowers, tractors, and other small engines, specifically models in the 163cc to 190cc range like the Troy-Bilt TB110, TB200, and various B&S 500–700 series.

Fitment & Compatibility

Before buying, confirm your engine model number (e.g., 103M02, 09P702, 9P702) – it’s stamped on the engine shroud or near the spark plug. This kit replaces B&S carburetors 594057, 592361, 594529, and 799584/594058. It fits B&S 550EX, 625EX, 675EX, 725EX, and the LC121P. It also works with Troy-Bilt TB110, TB200, and similar push mowers using 163cc engines. Not compatible with overhead valve (OHV) engines or larger vertical shaft models. Measure your existing air filter diameter (approx. 4.5”) and spark plug gap (0.030” recommended). The included fuel line is 7mm ID – check your mower’s line size.

Key Things to Know

• Aftermarket quality varies – This is a non-OEM kit. Expect the carb to function well but may need slight adjustment of the idle screw (turn clockwise to raise idle). Some users report the air filter fits snugly; trim the foam edge if needed.
• Installation is moderate – You’ll need a socket set, screwdriver, and possibly carburetor cleaner. Drain the fuel tank first. The carb comes pre-assembled but check gaskets for alignment.
• Common gotcha – The spark plug included is a generic replacement (usually a J19LM or equivalent). If your engine requires a specific heat range, stick with OEM. Also, the fuel line may be slightly longer than needed – trim to fit.
• Includes fuel line – The kit comes with a short fuel line and clamps. If your mower’s line is brittle, this saves a separate purchase.

Should You Buy It

If you want a budget-friendly, all-in-one tune-up for a common B&S engine and are comfortable with basic carburetor work, this kit is a solid value. Skip it if you need exact OEM parts for a commercial mower or a specific spark plug heat range. For most homeowners with a Troy-Bilt or similar push mower, it’ll get you running again quickly.