GENUINE OEM Honda (HRX217HMA) (HRX217HXA) (HRX217TDA) Walk-Behind Lawn Mower Engines Fuel Tank Gas Cap

What It Is

This is a genuine OEM Honda fuel tank cap designed for select HRX217 model walk-behind mowers. It seals the fuel tank to prevent leaks and evaporation, and includes a built-in vent to maintain proper fuel flow to the carburetor.

Fitment & Compatibility

Verify your mower model exactly—this cap fits Honda HRX217HMA, HRX217HXA, and HRX217TDA models. It does not fit HRX217HYA, HRX217VKA, or older HRX models with a different cap design. Check the underside of your current cap for a Honda part number (typically 17620-Z0L-801 or 17620-Z0L-802). Measure the outer diameter: genuine cap is ~1.5 inches across. Aftermarket caps may differ in vent performance or seal quality, so stick with OEM for exact fit.

Key Things to Know

• Quality: OEM Honda construction with a rubber gasket that resists cracking from fuel exposure. Aftermarket caps often use cheaper seals that leak within a season.
• Installation: Simple—unscrew old cap, screw on new one hand-tight. No tools needed. Takes 30 seconds.
• Common gotcha: If your mower runs rough or stalls after refueling, the vent in the old cap may be clogged. Replace the cap before cleaning the carburetor—it’s cheaper and often fixes the issue.
• Vent check: New cap should “click” when fully tightened. If it doesn’t, the vent may be defective; return immediately.

Should You Buy It

If your HRX217HMA, HXA, or TDA has a loose, leaking, or non-venting cap, this OEM replacement is the right fix. It’s cheap, easy to install, and eliminates fuel smell or stalling caused by a bad seal. Skip cheap aftermarket caps—the genuine Honda part lasts years longer and guarantees correct fit.