Cummins® ISX / X15 Engines

We’ve been recommending our full-flow lube filters for ISX engines for decades. The fact is, our family of ISX lube filters STILL perform better where it counts – whether comparing to older stacked disk or the current OEM stacked filter arrangement.

Donaldson filters provide superior contaminant holding capacity (longer filter life) and filtration efficiency (contaminant removal). No matter how you stack it – Donaldson filters deliver better engine protection and provide better protection for your ISX / X15 engines than Fleetguard® LF14000NN filters.


  • Cummins® ISX / X15 engines for on-road applications


  • High-efficiency contaminant capture – from particulate to sludge
  • Higher contaminant holding capacity
  • Minimal oil flow restriction


  • Holds up to 56% more contaminant than Fleetguard LF14000NN filters
  • 10x more efficient than Fleetguard LF14000NN filters

Filter Options

  • P559000 High efficiency with standard seals
    • 98% @ 15 micron 
    • >99% @ 30 micron
  • DBL7900 High efficiency with long-life seals for extended service intervals
    • 98% @ 15 micron
    • >99% @ 30 micron

Cummins® and Fleetguard® are registered trademarks of Cummins Inc.


This servicing information is provided as a best practices guide. It is not intended to replace or supersede the service instructions supplied by your engine or equipment manufacturer.

Lube Spin-On

  1. Unscrew and remove old filter and gasket
    Properly dispose of the used filter according to local regulations.

  2. Wipe filter head with a clean cloth

  3. Fill with oil on the dirty side per engine manufacturer recommendations

  4. Apply a thin film of clean motor oil to the gasket

  5. Align threads and spin on filter until gasket contact

  6. Follow icons on filter to tighten

  7. Check oil level

  8. Start engine and check for leaks

  9. Stop engine and recheck oil level

Donaldson Lube Filtration Overview

Donaldson carries a complete line of lube oil filters for diesel engines. This module provides an in-depth look at Donaldson lube filters and the advantages of media technology. Get peak engine and equipment performance with Donaldson lube filters.