GCV 170 Carburetor for Honda GCV170 HRN216 GCV200 HRX217-K6 Lawn Mower GCV170LA GCV200LA G5B G5BR S3C S3L Engines 16100-Z9L-811 Tune up Kit

What It Is

This is a complete OEM Honda carburetor assembly for GCV170, GCV200, and select HRN/HRX series engines. It replaces the original part number 16100-Z9L-811 and functions as the fuel metering and delivery system for small Honda walk-behind mowers.

Fitment & Compatibility

Before buying, confirm your engine model is one of these: GCV170, GCV170LA, GCV200, GCV200LA, G5B, G5BR, S3C, or S3L. This carburetor fits Honda HRN216 and HRX217-K6 mowers specifically. Check your mower’s deck size (typically 21–22 inches) but the true match is the engine model number—stamped on the engine shroud near the spark plug. This is an OEM part, not aftermarket, so it matches factory specs exactly. No additional measurements needed if your engine is listed.

Key Things to Know

• Quality: OEM Honda construction—no cheap plastic or poor castings. Expect reliable starting and smooth idle.
• Installation difficulty: Moderate. You’ll need basic tools (screwdrivers, socket set) and may need to remove the air filter housing and fuel line. About 30–45 minutes for a first-timer.
• Common gotchas: The carburetor gasket and fuel bowl O-ring are included, but the fuel line clamp may be reused. Ensure the old gasket is completely scraped off the intake manifold to prevent air leaks.
• Tune-up kit: This is a full carburetor, not a rebuild kit. It replaces the entire unit, so skip cleaning—just swap it in.

Should You Buy It

If your Honda GCV170 or GCV200 engine is hard to start, runs rough, or won’t idle, this is the right fix. It’s especially good for mowers with ethanol-damaged carburetors where cleaning fails. Best for DIY owners who want a direct, reliable replacement without chasing aftermarket fitment issues.