Submitted by: PlumCrazy
I got out my NAPA filter book and looked up the stock Ranger filter (4.0 and 2.0/2.3/2.5 use the same filter as the 7.5, 5.4 and many other Ford motors)
The stock Ranger filter is a 1515 (Napa #) and it is 3.6″ around and 5.35″ long with 3/4-16 threads. The O ring is inboard and has a 2.834 ID.
I ended up finding a filter with the same thread, diameter, and O ring, but its 6.982″ long. The NAPA # is 1773. (the Purolater was L400017) I also found a 1333 is a little bigger around (3.7″) and 6.982″ long, but it is valved different it was 30psi where as the 1773 and 1515 are 8-10 psi.
The stock filter holds around .625 t.750 of a qt. The 1773 holds 1.25-1.50 qts. So in the end you end up with 1/2 qt more capacity. This filter would work on the 2.0/2.3/2.5 but you would have to put a 90* adapter in because it would be too long to fit in there.
Here are a few pics. It is still tucked up high enough to be protected.
About The Author
Jim Oaks is the founder of The Ranger Station (TRS), one of the longest-running Ford Ranger enthusiast communities on the web. He has spent over three decades owning, modifying, repairing, and driving Ford Rangers on the street, trail, and overlanding routes.
Since launching TheRangerStation.com in 1999, Jim has documented thousands of real-world Ranger builds, technical repairs, drivetrain swaps, suspension modifications, and off-road adventures. TRS has been heavily referenced by enthusiasts, mechanics, and off-road builders looking for practical, experience-based information.