Fuel Tool Check Valve O-Ring - Lower O-Ring — Harley-Davidson Softail Fat Boy, Softail Heritage Classic, Road King (2001-2018)

Fuel Tool check valve O-ring for V-twin fuel systems, designed as a replacement for the lower seal in fuel check valve assemblies. High-durability DuPont Viton material eliminates the need to replace the entire check valve and fuel line when only the O-ring has failed.

Features

• DuPont Viton O-ring material
• Fits 2001 and newer fuel-injected Harley-Davidson models
• Available individually or in packs of 5
• Extends check valve assembly life

Specifications

• Brand: Fuel Tool
• Manufacturer Part #: MC200
• UPC: 857266003067
• Material: DuPont Viton
• Length: 3.05 in
• Width: 3.6 in
• Height: 0.4 in
• Weight: 0.01 lbs
• Country of Origin: China (Mainland)

Fitment

Fits 2001 and newer fuel-injected Harley-Davidson models with check valve fuel systems.

Frequently Asked Questions

How do I know if my check valve O-ring needs replacement?

If your fuel system is leaking at the check valve assembly or your fuel pump primes weakly, the lower O-ring may have failed. Replacement restores the seal without replacing the whole valve.

Can I buy these individually or do I need to buy a pack?

Fuel Tool sells these O-rings individually or in packs of 5, so you can stock spares or just buy one for immediate repair.

Will this fit my 2000 Harley?

This O-ring is for 2001 and newer fuel-injected models. Pre-2001 bikes may use different check valve assemblies — verify your model year before ordering.

What's the difference between this lower O-ring and other fuel seals?

This is specifically the lower seal in the check valve assembly. If you need the upper seal, that's a different part number — consult your fuel system diagram.