WOTIAN 799584 Lawnmower Carburetor Kit Compatible with B&S 550EX 625EX 675EX 725EXi Series 163cc Engine TB110 TB200 Lawn Mower Carburetor Replacement for 594058 594057 592361 594529

What It Is

This is a complete aftermarket carburetor kit designed to replace the fuel system on Briggs & Stratton 550EX, 625EX, 675EX, and 725EXi Series engines (163cc). It fits popular push mowers like the Troy-Bilt TB110 and TB200, restoring fuel delivery when the original carb clogs or fails.

Fitment & Compatibility

Before buying, verify three things:

• Engine model: Check your B&S engine’s model number (stamped on the valve cover or shroud). This kit fits 550EX, 625EX, 675EX, 725EXi—not older 500E or 450E series.
• OEM part numbers: It replaces 594058, 594057, 592361, 594529. If your original carb has a different number (e.g., 591307), it likely won’t match.
• Physical fit: The kit includes the carburetor, gaskets, and fuel line. Measure the mounting bolt spacing and intake port size if possible—some 725EXi variants use a slightly different flange.

Not compatible with vertical shaft engines, snow throwers, or pressure washers unless they share the same B&S series.

Key Things to Know

• Quality vs. OEM: WOTIAN is a budget aftermarket brand. Expect functional performance but potentially less precise machining than a genuine B&S carb. Clean any debris from the fuel bowl before installation.
• Installation difficulty: Moderate. You’ll need a socket set, screwdriver, and possibly a fuel line clamp. The hardest part is swapping the throttle/governor linkage—take a photo before disassembly.
• Common gotcha: The included gaskets may be slightly thicker than OEM. If the carb leaks, use a thin layer of sealant or reuse your original gasket.
• Fuel system prep: Replace the fuel filter and use fresh gas. Old fuel in the tank will quickly clog the new carb again.

Should You Buy It

If you have a B&S 550EX–725EXi mower with a clogged or leaking carb and want a low-cost fix (under $20), this kit is a solid value. Avoid it if you need exact OEM fit for a commercial mower or if your engine is a rare variant—spend the extra $15–20 for a genuine B&S carb instead.