Skip to content
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.

5321059 Genuine Cummins Fleetguard Fuel Filter Assembly

P/N: 5321059 Manufactured by: Cummins
Original price $489.00 - Original price $489.00
Original price
$489.00
$489.00 - $489.00
Current price $489.00
1 in Stock
Condition: New
We accept:
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Not Sure Which Part Fits?
Our support team is here to help.
+1 (828) 209-8010
Monday – Saturday | 8:00 AM – 8:00 PM (EST)
Fast 2–3 Day Shipping
30-Day Returns
In Stock & Ships Fast
Expert Support Available
2-Year Warranty

At Line Truck Parts LLC, we are committed to providing reliable automotive parts and a transparent customer experience. Eligible parts purchased directly from our website are covered by a 2-Year Limited Warranty, giving you added confidence in your purchase. Learn More

Product Overview

The 5321059 is a genuine Cummins Fleetguard fuel filter assembly designed for a wide range of Cummins C, ISC, ISL, L9, QSC, and QSL engine platforms. It removes contaminants from the fuel supply before fuel reaches the injection system, helping maintain proper fuel flow and filtration throughout engine operation.

Product Features

The 5321059 Fleetguard fuel filter assembly is manufactured to Cummins specifications for diesel and natural gas fuel filtration systems.

  • Filters fuel to remove contaminants before the injection system.
  • Supports consistent fuel flow across compatible Cummins engine platforms.
  • Integrates with factory fuel system mounting and connection points.
  • Maintains clean fuel delivery during normal engine operating conditions.
  • Operates with diesel and natural gas engine fuel filtration systems.
  • Assists reliable fuel system protection throughout scheduled service intervals.

Technical Specifications

Condition New
Brand Cummins
Part Number 5321059
Part Type Fleetguard Fuel Filter Assembly


Installation Notes

The 5321059 should be installed after inspecting the fuel filter mounting base, sealing surfaces, and fuel line connections for contamination or damage that could affect sealing or fuel flow. After installation, prime the fuel system as required, inspect all fittings for leaks, and verify proper fuel pressure before returning the engine to service.

Always verify the part number, engine model, fuel system configuration, and Fleetguard filter assembly specification before installation.