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Est. 1957
FAST

FAST O-Ring 4.1MM Cross Section 7

$7.95

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Replacement 4.1mm cross-section O-ring for FAST LSXR fuel injectors.

Key Features

  • Fits FAST LSXR fuel injectors.
  • Features a 4.1mm cross-section.
  • Single replacement O-ring.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

This 4.1mm cross-section O-ring is a direct replacement for your FAST LSXR fuel injector. When you're rebuilding or servicing your fuel system, ensuring a proper seal is critical to prevent leaks and maintain consistent fuel pressure. This well-made O-ring is designed to fit precisely, helping to keep your engine running smoothly.

Using the correct O-ring size, like this 4.1mm cross-section unit, is important for sealing the injector into the fuel rail and intake manifold. A good seal ensures that fuel only goes where it's supposed to, preventing unmetered air from entering the intake or fuel from escaping. This is a single replacement O-ring, so you'll want to order one for each injector you are servicing.

Specifications

Brand
FAST
Manufacturer Part #
54043-302

Frequently Asked Questions

FAST O-Ring 4.1MM Cross Section 7

$7.95