Carburetor For Briggs & Stratton 500cc 17.5hp Replacement Carb 594492 27761152 With Air Filter

What It Is

This is a complete carburetor replacement kit for Briggs & Stratton engines in the 500cc, 17.5hp class, commonly found on riding mowers, lawn tractors, and zero-turn mowers. It includes the carburetor, air filter, gaskets, and hardware—everything needed to replace a failed or clogged unit.

Fitment & Compatibility

• Engine models: Fits Briggs & Stratton 500cc single-cylinder engines (e.g., 31C707, 31P977, 31R907) and many 17.5hp vertical shaft engines.
• OEM part numbers: Direct replacement for 594492, 27761152, and 698188. Cross-check your engine’s OEM number on the valve cover or stamped on the blower housing.
• Deck size: Not deck-specific—compatibility depends on engine model, not mower brand or deck width.
• Aftermarket: This is a non-OEM part. It may require minor adjustment (idle speed screw) and might not include a fuel shutoff solenoid if your original had one. Verify your old carb’s mounting pattern and fuel line diameter (typically 1/4-inch).

Key Things to Know

• Quality: Generally good for the price, but some users report needing to clean out machining debris or adjust the float height before installation. Inspect the gaskets for fit.
• Installation difficulty: Moderate. Requires basic tools (socket set, screwdrivers) and careful alignment of governor linkage. If you’re not comfortable with small engine carb work, budget 1-2 hours.
• Common gotchas: The included air filter may be slightly smaller than OEM—check fit in your air box. The carb may not come with a choke cable adapter; reuse your original if needed. Always replace the fuel line and filter at the same time.
• Return policy: Since it’s an aftermarket part, verify the seller’s return window. Some have a 30-day limit.

Should You Buy It

This is a solid budget-friendly choice for DIYers who want to fix a surging, hard-starting, or fuel-leaking engine without spending $60+ on an OEM carb. It’s not ideal for pros who need exact fit and zero tuning, but for a weekend repair on a 5-10 year old rider, it’s a practical, well-rated option.