GCV160LA0 Carburetor for Honda 16100-Z8B-901 (BB76A A) HRR216K9 HRS216K6 HRR216K10 HRS216K5 Mower

What It Is

This is a complete carburetor assembly designed to replace the OEM Honda 16100-Z8B-901 (also marked BB76A A) on select Honda self-propelled mowers. It mixes air and fuel for the GCV160LA0 engine, commonly used on residential HRR216 and HRS216 series mowers.

Fitment & Compatibility

• Direct fit for: Honda HRR216K9, HRS216K6, HRR216K10, HRS216K5 (confirm your mower’s model number on the deck or under the seat).
• OEM vs aftermarket: This is an aftermarket part, not genuine Honda. It’s a direct physical replacement but may use slightly different gaskets or jetting.
• Measurements: No modifications needed; it bolts on with two screws. Check that your existing throttle/governor linkage matches the shape in the photos (some early HRR216 models use a different linkage arm).
• Engine check: Ensure your engine code is GCV160LA0 (stamped on the engine block, not the mower model number). If you have a GCV160LA1 or LA2, this carburetor may still fit but verify linkage compatibility.

Key Things to Know

• Quality variance: Aftermarket carburetors often require cleaning out debris or metal shavings before installation. Rinse with carb cleaner and blow out passages to avoid starting issues.
• Installation difficulty: Moderate. You’ll need to remove the air filter housing, fuel line, and throttle cable. Expect 30–60 minutes for a first-timer. Have a small screwdriver set and pliers handy.
• Common gotcha: The included gaskets may be thinner than OEM. Use them, but if you get a vacuum leak (rough idle, surging), double-check the gasket seal or reuse your original Honda gasket.
• Fuel compatibility: If your mower sat with ethanol gas, the old carb’s plastic bowl and jets may be corroded. This replacement is fine with ethanol-blended fuel, but drain the tank and use fresh gas.

Should You Buy It

Buy this if you have a confirmed GCV160LA0 mower and want a low-cost fix for a clogged or non-functioning carburetor. It’s a solid budget option for DIY homeowners who don’t want to rebuild the original, but expect to do minor cleanup and linkage adjustment. Not for pros needing guaranteed OEM durability.