GCV170 Carburetor with Filter for Honda HRN216 GCV170LA G5B GCV170LA G5BR GCV170LA S3B Engine Replace 16100-Z9L-811 Lawn Mowers

What It Is

This is a complete carburetor assembly with pre-installed fuel filter, designed for Honda GCV170 engines used in HRN216 lawn mowers. It replaces the OEM Honda part 16100-Z9L-811 and is a direct bolt-on replacement for failed or clogged original carburetors.

Fitment & Compatibility

Before buying, confirm your engine model is one of these: GCV170LA G5B, GCV170LA G5BR, or GCV170LA S3B. The GCV170 is a 170cc Honda engine found on HRN216 mowers (21-inch or 22-inch decks). This is an aftermarket carb, not OEM Honda—but it matches OEM specs. Check your old carb’s mounting flange shape and gasket pattern; this unit uses the standard Honda 2-bolt intake flange. Measure the fuel line inner diameter (typically 1/4-inch) to ensure the included filter fits.

Key Things to Know

• Quality vs OEM: Aftermarket carb at a fraction of OEM price. Works well for most, but some may need minor float height adjustment to avoid flooding.
• Installation difficulty: Easy for anyone with basic tools—remove air filter cover, disconnect fuel line and throttle linkage, unbolt old carb, bolt on new one. No special tools needed.
• Common gotcha: The pre-installed filter may be too long for some mower fuel tank outlets. If it won’t fit, swap to a shorter aftermarket filter or trim the fuel line slightly.
• Performance: Expect factory-like operation after a quick prime and start. No carb tuning required—just ensure gasket is clean and bolts tightened evenly.

Should You Buy It

Buy this if your GCV170 carb is gummed up from old fuel or has a stuck float, and you want a quick, cheap fix without rebuilding the original. It’s ideal for DIY home users with a HRN216 mower who don’t want to pay $60+ for an OEM carb. Skip it if you need exact OEM parts for warranty or commercial use—go with genuine Honda 16100-Z9L-811 instead.