Time for some fresh FASS Fuel Filters?
Jake H • September 16, 2025

FASS Filters shipped right to your door!

Routine filter changes are key to keeping any diesel pickup running strong, and FASS makes that job simple. Every FASS Fuel System is designed with easy fuel filter changes in mind—no special tools, no complicated disassembly.

Whether you drive a class 8 truck, or a pickup with a Cummins, Duramax, or Powerstroke, replacing your
FASS Filters takes just a few minutes and helps protect injectors, maintain peak fuel pressure, and ensure clean, water-free diesel.

A typical filter change is straightforward:

  1. Shut the system off and relieve pressure.
  2. Unscrew the old filters (Fuel/Water Separator and Particulate Filter).
  3. Lubricate and spin on the new filters until snug.
  4. Prime and check for leaks.

That’s it—your truck is ready to hit the road with maximum protection.

Individual Filters, Filter Packs, and Drop-In Series Options

FASS makes it easy to choose the filter replacement that fits your maintenance style and budget:

  • Individual Filters – Perfect when you only need to replace a single Fuel/Water Separator or Particulate Filter. Available in multiple micron ratings for custom filtration needs.
  • Filter Packs – A convenient bundle that includes everything for a complete filter service in one part number. Stock up and save time.
  • Drop-In Series Fuel Filters – Engineered for FASS Drop-In Series Fuel Systems, these filters maximize fuel quality and simplify maintenance for modern L5P Duramax, 6.7 Powerstroke, and late-model Cummins applications.

By using genuine FASS filters, you keep your warranty intact and maintain the 2-micron filtration and air/vapor removal that FASS systems are famous for.

Keep Your Diesel Running Clean and Strong

Changing your FASS Filters regularly—every 15,000 to 30,000 miles depending on driving conditions—extends injection system life and protects your investment. With FASS’s easy-change design and a full range of replacement options, filter service is no longer a chore.

Stock up on individual
FASS Filters, grab a Filter Pack, or upgrade to Drop-In Series Fuel Filters to keep your truck running like new.

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