Which Mopar Fuel Filter Kit Does Your RAM 6.7L Cummins Actually Need? OEM Part Numbers by Year (2013–2024)

Which Mopar Fuel Filter Kit Does Your RAM 6.7L Cummins Actually Need? OEM Part Numbers by Year (2013–2024)

If you own a RAM 2500, 3500, 4500, or 5500 with the 6.7L Cummins turbodiesel, you already know fuel filter changes aren't optional. What most owners don't realize is that the OEM Mopar part numbers changed between the 2013–2018 and 2019–2024 model years — and installing the wrong filter set won't seal properly, can introduce air into the fuel system, and on CP4-equipped 2019–2020 trucks, that single mistake has destroyed $10,000 worth of injection components.

This guide eliminates the confusion. Every OEM part number, every model year, one page.

What Are the Correct Mopar Fuel Filter Part Numbers for 2013–2018 RAM 6.7L Cummins?

The 2013–2018 RAM 2500, 3500, 4500, and 5500 trucks equipped with the 6.7L Cummins use a two-filter system. The chassis-mounted primary fuel water separator is part number 68157291AA. The engine-mounted secondary fuel filter is part number 68197867AB (which superseded the earlier 68197867AA).

Both filters must be replaced together. RAM recommends replacement every 15,000 miles under normal conditions, or every 10,000 miles if you tow frequently, idle extensively, or operate in dusty environments. You can get the complete Mopar fuel filter set (68197867AB + 68157291AA) as a matched kit to ensure both filters are genuine OEM.

What Changed for 2019–2024 RAM 6.7L Cummins Fuel Filters?

The primary fuel filter remained the same — 68157291AA. However, the secondary filter changed to part number 68436631AA on all 2019–2024 models. These two part numbers are not interchangeable with the 2013–2018 set, so trying to use a 68197867AB on a 2020 RAM 3500 will result in a poor seal and potential air ingestion.

The correct set for 2019–2024 trucks is the Mopar fuel filter kit (68157291AA + 68436631AA). This is especially critical for 2019–2020 models equipped with the Bosch CP4.2 high-pressure fuel pump, which is extremely sensitive to contamination and air in the fuel system. Improper filter installation is one of the documented causes of CP4 pump failure in these trucks — a repair that frequently exceeds $8,000–$12,000 when injectors, fuel rails, and lines are contaminated with metal debris.

Which Oil Filter Does the 6.7L Cummins Use?

Every 2007.5–2024 RAM 6.7L Cummins uses the same Mopar oil filter: part number 5083285AA, also cross-referenced as MO-285. RAM recommends oil changes every 15,000 miles under ideal conditions, but most diesel technicians advise 7,500–10,000 miles for trucks that tow, idle, or operate in extreme temperatures.

Rather than buying the fuel and oil filters separately, the complete maintenance kits save time and eliminate the risk of ordering the wrong combination. For 2013–2018 trucks, the Mopar oil and fuel filter kit (5083285AA + 68197867AB + 68157291AA) covers your full service interval. For 2019–2024 trucks, the Mopar fuel and oil filter kit (68157291AA + 68436631AA + 5083285AA) is the correct set.

Why Do RAM Owners Keep Buying the Wrong Filter?

The confusion comes from three places. First, the primary filter part number 68157291AA is shared across both generations, which tricks owners into thinking the entire kit is the same. Second, the secondary filter updated from 68197867AB to 68436631AA without any obvious visual difference in the filter housing. Third, aftermarket sellers frequently list generic "6.7 Cummins fuel filters" without specifying model year compatibility, and the cheaper Chinese-manufactured filters flooding marketplaces like eBay often use older cross-reference numbers that don't account for the 2019+ change.

The result is air leaks at the filter seal, unfiltered fuel reaching the injection pump, and on CP4-equipped trucks, the beginning of a catastrophic failure chain that contaminates the entire fuel system with metal shavings.

What About the Crankcase Ventilation Filter Most Owners Forget?

There's a third filter in the 6.7L Cummins system that almost nobody talks about until it triggers a check engine light: the crankcase ventilation (CCV) filter. The OEM replacement is the Fleetguard CV52001, which fits all 2007.5–2024 RAM 6.7L Cummins trucks.

Cummins recommends replacing the CCV filter every 67,500 miles. When it clogs, crankcase pressure builds and forces oil past seals and into the turbo intake. Common symptoms include oil mist around the turbo inlet, reduced engine performance, increased fuel consumption, and diagnostic trouble codes P1507 or P1508. Many owners chase turbo leaks or intake gaskets for months before discovering a $40 crankcase filter was the root cause.

Can You Use Fleetguard Filters Instead of Mopar on a RAM Cummins?

Yes — and there's a good reason why. Mopar-branded fuel and oil filters for the RAM 6.7L Cummins are actually manufactured by Cummins Filtration, which is the same company that makes Fleetguard filters. The Mopar branding is the dealer-channel packaging; the filtration media and specifications are identical to their Fleetguard equivalents.

For heavy-duty Cummins engines beyond the RAM pickup — ISX15, X15, ISM, and QSX platforms — Fleetguard filters like the LF14000NN oil filter