Keep clean, filtered oil circulating through your diesel's bearings and journals with the Mobil 1 oil filter M1-403A, a spin-on lube filter that threads directly onto the engine's filter mount. It's a direct-fit replacement across a wide range of heavy-duty trucks — including the 1989-1993 Dodge D250, D350, W250 and W350, the 1994-2010 Dodge Ram 2500 and Ram 3500, the 2005-2009 Dodge Ram 4000, the 2008-2010 Dodge Ram 4500 and Ram 5500, the 2011-2024 Ram 2500, 3500, 4500 and 5500, and the 2008-2010 Sterling Truck Bullet 45 and Bullet 55. See the Buyer's Guide tab for the full application list.
Regular filter changes at each oil service help protect the engine from abrasive contaminants. Made in the United States.
Will this Mobil 1 oil filter fit my Ram 2500?
Yes — the M1-403A is listed for the 1994-2010 Dodge Ram 2500 and the 2011-2024 Ram 2500. Confirm your model year against the Buyer's Guide tab before ordering.
What size and thread is the M1-403A?
It has a 3.69 in (94 mm) outside diameter and a 1-16 thread size, in a spin-on lube filter design. The canister stands 6.61 in tall.
Does this filter have an anti-drain-back valve?
No. Per the manufacturer's specifications, this filter is built without an anti-drain-back valve.
What type of gasket does it use?
The M1-403A uses a lathe-cut sealing gasket, which seats against the mounting surface as the spin-on filter is threaded into place.
Where is the Mobil 1 M1-403A made?
Its country of origin is the United States.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
