What This Filter Is and Where It Goes
FF2203 is a spin-on fuel filter built for the Cummins ISX engine family. It's doing secondary fuel filtration duty on most of these setups - pulling fine contaminants out before fuel hits the injectors. Cheap part, expensive consequences if you run the wrong micron rating or skip changes.
This number gets used across a pile of ISX-equipped trucks - Freightliner, Peterbilt, Kenworth, International, whatever chassis the ISX landed in. The engine's the deciding factor here, not the truck badge, so don't assume by make/model alone.
Why These Cross Numbers Match Up
FF2203 cross-references to Fleetguard FF1128, Donaldson P552203, Baldwin BF7760, Luber-finer LFF2203, and Cummins' own 4010476. These aren't coincidence - they're all built to the same thread pitch, gasket seal diameter, and filtration spec so they thread onto the same base and seal the same way.
That said, spin-on filters live and die by seal size and thread match. If your old filter's seal or base doesn't look right next to the new one, stop and check before you install it. A filter that threads on fine but doesn't seal right will dump fuel or air into your system, and that's a tow call waiting to happen.
Rule of thumb: pull the old filter, read the number stamped or printed on it, and match it against this cross list. If numbers don't line up exactly, get us the engine serial or full VIN and we'll verify before it ships.
Ordering From PartStop
We're in Tacoma, so if you're local or running through the Puget Sound corridor, same-day pickup or delivery is usually doable if we've got stock - call ahead so we can pull it before you drive over.
Ship nationwide too, most orders out the same or next business day. Every filter we sell carries our 6+ month warranty, so if something's off on delivery, we deal with it - no argument.
FF2203 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to FF2203. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Luber-finer | LFF2203 |
| Donaldson | P552203 |
| Baldwin | BF7760 |
| Fleetguard | FF1128 |
| Cummins | 4010476 |
Frequently asked questions
Does FF2203 fit my Freightliner Cascadia?
Depends what engine's under the hood, not the truck model. If it's a Cummins ISX, likely yes - but confirm with your engine serial number or match against the filter currently installed before ordering.
Is this the same as Fleetguard FF1128?
They cross-reference and are built to the same thread, seal, and filtration spec, so they're functionally interchangeable. Not the same manufacturer, but they fit the same application - check the old filter's number against this list to be sure.
How do I know if I need FF2203 or a different micron rating?
Check your engine's fuel system spec sheet or the number off the filter you're pulling out. ISX applications can run different filtration stages depending on year and configuration, so matching the old part number is your safest bet.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.