247.372370 Carburetor For Craftsman 247.377051 247.377000 247.377050 Lawn Mower Compatible With Briggs & Stratton 725 163cc Carb

What It Is

This is a complete aftermarket carburetor assembly for specific Craftsman lawn mowers equipped with a Briggs & Stratton 725 Series 163cc engine. It replaces the OEM carburetor when the original is clogged, warped, or otherwise failing to deliver proper fuel-air mixture, causing hard starting, stalling, or rough running.

Fitment & Compatibility

Before buying, verify all three of the following:

1. Mower model numbers: This fits Craftsman models 247.377051, 247.377000, and 247.377050 only. Check the model tag under the seat or on the mower frame—not the engine tag.
2. Engine family: Must be a Briggs & Stratton 725 Series, 163cc engine. Confirm the engine model number (e.g., 12A902) on the engine shroud or valve cover.
3. Physical dimensions: Measure your old carburetor’s mounting flange bolt spacing (center-to-center) and inlet tube diameter. This carb uses a standard 1-inch air filter neck and two-bolt flange pattern common to 725 engines—but aftermarket tolerances can vary, so compare side-by-side if possible.

This is a non-OEM aftermarket part. It will not have the Briggs & Stratton logo. It should bolt on directly, but you may need to reuse your old gaskets, fuel line, or governor linkage if they don’t match exactly.

Key Things to Know

• Quality is budget-tier: Expect thin castings, possible burrs on the bowl gasket surface, and a plastic float that may need adjustment. Plan to clean out any machining debris before installation.
• Installation difficulty: Moderate. You’ll need to remove the air filter housing, unhook the throttle/governor springs, and swap the fuel line. No special tools beyond a socket set and screwdriver, but take photos of linkage before disassembly.
• Common gotchas: The included gaskets may not seal perfectly—reuse your OEM gasket if it’s in good shape. The carb may need a slight idle mixture screw adjustment (turn 1.5 turns out as a baseline). Also, the fuel inlet barb may be a different angle than OEM, requiring a fuel line reroute.
• Return policy: At this price, returns are often not free. If it doesn’t fit or leaks, you may be better off buying a new OEM carb for ~$40-50 with a warranty.

Should You Buy It

This carb is a good low-cost fix if you’re mechanically handy and your mower’s original carb is clearly the problem (clogged jets, warped body). It’s not for first-timers or those expecting OEM fit/finish—if you want guaranteed compatibility and no tinkering, spend the extra $20-30 on an OEM Briggs & Stratton carburetor. For a quick, cheap repair on a budget mower, this will likely get you running again.