Keep water and debris out of your diesel fuel system with the Baldwin Fuel/Water Separator Filter BF1226, a spin-on fuel/water separator with drain that filters the fuel and separates water before it can reach the injection system. It's a direct-fit replacement for Cummins engines across a wide range of medium- and heavy-duty trucks and buses running the L4-3.9L, L6-5.9L, and L6-8.3L, including the 1992-1999 Ford F-800, 1991-1997 Freightliner FL70, 1989-2002 Blue Bird TC2000, and many Peterbilt models — see the Buyer's Guide tab for the full list.
Made in the United States. Replacing a diesel fuel/water separator on the recommended interval helps maintain clean fuel delivery and protects the injection system.
Interchange: Cummins 3903202
What does the BF1226 filter do?
It's a spin-on fuel/water separator with a drain that filters diesel fuel and separates water so it can be drained off before reaching the injection system.
Does it come with an O-ring?
Yes, one O-ring is included. Per the manufacturer's caution, the furnished O-ring must be installed on the post to achieve a proper seal.
What engines and vehicles does it fit?
It fits Cummins L4-3.9L, L6-5.9L, and L6-8.3L engines in many trucks and buses, including Ford, Freightliner, Blue Bird, and Peterbilt. See the Buyer's Guide tab for the full list.
What number does this filter replace?
It replaces Cummins 3903202. Confirm the interchange and fitment for your specific vehicle before ordering.
What are the thread and dimensions?
The thread is M16 x 1.5, with a 3 1/32 in (77.0 mm) outside diameter and a 5 11/16 in (144.5 mm) height.
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.
