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116607110338-0 - Northline Parts

Fuel Tool MC-300 EFI Check Valve Rebuild Kit for 2001-2022 Harley-Davidson

SKU: NLT1H00303
$24.99 In Stock
$24.99
Sale price  $24.99 Regular price 
Ships for free in 2–4 business days.
This Fuel Tool MC-300 kit services compatible Harley-Davidson EFI fuel-tank check valves from 2001-2022 with a stainless check valve, two Viton O-rings, and spring.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Compatible Harley-Davidson EFI motorcycles, 2001-2022, using the serviceable matching check valve
  • Touring, Softail, Dyna, Sportster, and other families only where the connector design matches
  • Fuel-tank quick-disconnect assemblies approved for the Fuel Tool MC-300 procedure

Product Overview

Fuel seeping from the tank quick-disconnect when the line is removed, a connector that will not seal, or aged internal components can call for rebuilding the check-valve assembly instead of replacing a larger fuel-system component. The MC-300 provides the internal service parts for matching Harley-Davidson EFI fittings.

Gasoline service is hazardous. Confirm the exact connector type and follow depressurization, ventilation, fire-prevention, and leak-test procedures.

Key Features & Performance

  • Stainless replacement check-valve component
  • Two fuel-resistant Viton O-rings
  • Replacement spring included
  • Purpose-built service kit for matching EFI tank fittings

Replaces Part Numbers

  • Fuel Tool MC-300

Common Uses

  • Repairing seepage at a disconnected fuel fitting
  • Replacing hardened or damaged internal O-rings
  • Restoring check-valve sealing after age or contamination
  • Servicing the tank fitting during fuel-line or pump work

Technical Specifications

  • Product Type: EFI check-valve rebuild kit
  • Primary Component: Stainless check valve
  • Seals: Two Viton O-rings
  • Application Years: 2001-2022 compatible Harley-Davidson EFI systems
  • Brand: Fuel Tool

Installation & Fitment

  • Work outdoors or in a properly ventilated fuel-service area
  • Relieve fuel pressure and disconnect the battery per service instructions
  • Use the specified installation procedure without scratching the sealing bore
  • Reconnect, pressurize, and inspect closely for leakage before riding

Compatibility Notice

Year range alone does not guarantee the same tank fitting. Do not use the motorcycle if fuel odor, wetness, damaged connectors, or leakage remains after service.

Frequently Asked Questions

Q: What problem is this kit intended to address? A: It services a matching EFI tank check valve that leaks or no longer seals correctly.

Q: Does it rebuild the fuel pump? A: No. It is for the serviceable check-valve area, not a complete pump module.

Q: Can I ride if the fitting still seeps? A: No. Fuel leakage is a fire hazard and requires correction before operation.

Part Summary

keywords: Fuel Tool MC-300 rebuild kit, Harley EFI check valve repair, motorcycle fuel quick disconnect leak, Harley tank fitting O rings, Viton fuel valve seal kit, 2001-2022 Harley fuel repair, stainless EFI check valve, Harley fuel seep replacement parts

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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