Filters
2 products
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Call or Text (352) 722-5295Oil filtration on the 1989-1993 RAM 5.9L Cummins
The Cummins 6BT moves its oil with a gear-driven lube pump, runs an engine oil cooler assembly, and relies on the filter to keep that oil clean for the bearings and the solid-lifter valvetrain. The reference filter for this engine is the Fleetguard LF16035. Down in the pan, a screen on the oil pickup tube catches big debris; it is what keeps a fallen killer dowel pin in the bottom of the pan.
What we carry
- PPE 214000767 MicroPure XR engine oil filter, listed for 1989-2024 Cummins engines.
- Mahle OC1001 oil filter, listed for 1989-2023 5.9L and 6.7L Cummins engines.
Both span several Cummins generations, so one part number can cover a first-gen and a newer Ram in the same driveway.
Fitment notes
Both filters are listed from 1989, so they cover every first-gen year, intercooled or not. While the pan is draining, note that the reference drain plug for 1989-1993 is Mopar 4293859. Verify by VIN if your engine has been swapped.
Frequently asked questions
How often should I change the oil filter on a 1989-1993 Cummins?
At every oil change: 6,000 miles or 6 months in normal service, 3,000 miles or 3 months in severe service. If you are not sure which applies to your truck, the shorter interval is the safe choice.
What is the reference filter for the first-gen 5.9L?
The Fleetguard LF16035 is the filter listed for this engine. The PPE and Mahle filters on this page are both listed for 1989-and-later Cummins fitment, so either one can go on in its place; check the product page details to compare them.
How much oil do I need with a filter change?
12.0 US quarts with the filter. Use 15W-40 above 10°F, 10W-30 from 0 to 30°F, and 5W-30 below 0°F if the truck has no block heater.
Not sure what fits? Call the shop at the number in the header, or use the fitment checker on any product page. We install everything we sell.