16100-Z9L-811 Carburetor for Honda GCV170 HRN216 Lawn Mower Carburetor for Honda GCV170LA G5B GCV170LA G5BR GCV170LA S3B Engine with Air Filter Parts

What It Is

This is a complete replacement carburetor assembly for Honda GCV170 engines, commonly used on HRN216 push mowers. It includes the carburetor, air filter, gaskets, and fuel line—everything needed to fix starting issues, surging, or poor performance caused by dirty or failing fuel delivery.

Fitment & Compatibility

Before buying, confirm your engine model is one of these: GCV170LA G5B, GCV170LA G5BR, or GCV170LA S3B. This carburetor is a direct OEM-style replacement for Honda part 16100-Z9L-811 and fits HRN216 series mowers with those specific engine codes. Check the engine model number (stamped on the blower housing or valve cover) and deck size is irrelevant—fitment is purely engine-based. This is an aftermarket part, not genuine Honda, but designed to match OEM specs. Measure the mounting bolt spacing (typically 40mm center-to-center) and the fuel inlet diameter (about 5/16") to ensure compatibility with your existing fuel line. If your mower has a different GCV170 variant (e.g., GCV170EA), it will not fit.

Key Things to Know

• Quality vs. OEM: This aftermarket carburetor works well for the price, but the plastic and gaskets may not last as long as genuine Honda. Expect 1–2 seasons of reliable service.
• Installation difficulty: Moderate. You’ll need to remove the old carburetor, clean the intake manifold surface, and transfer any linkage springs. No special tools beyond a socket set and screwdriver.
• Common gotcha: The included air filter is generic—if your mower uses a specific Honda filter (e.g., 17210-Z9L-004), keep your old one or order separately.
• Fuel line compatibility: The supplied line may be too short or stiff. Use your original Honda fuel line if possible, or cut to fit.

Should You Buy It

If you have a Honda HRN216 with a GCV170LA engine and need a budget-friendly fix for hard starting or rough running, this is a solid value. It’s not built for heavy commercial use, but for homeowner maintenance it’ll get your mower running smoothly again without the cost of an OEM part.