What This Filter Is and What It Fits
This is a spin-on fuel filter used on heavy-duty diesel applications, commonly found on Freightliner trucks running Detroit engines. It's a secondary/final filter in most setups, meaning it's catching the fine stuff before fuel gets to the injectors — not a job you want a cheap filter doing.
Freightliner's own part number for this filter is FF5369W, and that W just means it's the version with the water-separator capability built in some applications use. P550463 and 205278 are the Donaldson and Fleetguard-style aftermarket numbers that cross to the same spec.
Point is, whether the old filter box says Freightliner, Fleetguard, or Donaldson, if it's got one of these numbers on it, you're looking at the same filter footprint and micron rating.
How the Cross-Reference Numbers Line Up
Fuel filters aren't as fussy as, say, a brake drum on bolt pattern, but they still need to match on thread size, gasket seal diameter, and micron rating — get any of those wrong and you either won't get a seal or you'll starve the engine of fuel flow.
FF5369 and FF5369W are essentially the same filter, with the W denoting the water-in-fuel sensor provision some Freightliner setups use. Alliance's N10G FF5369W and Donaldson's ABPN10GFS1029W are aftermarket manufacturers building to that same Freightliner spec. P550463 and P550757 are Donaldson's own numbering, and they interchange because the seal and thread spec match.
The number that matters most is whatever's stamped on the filter you're pulling off right now. If it's got a water sensor port and yours doesn't, or vice versa, that's the kind of detail that'll bite you if you don't check it before you order.
Ordering From PartStop
We keep this filter in stock at our Tacoma counter, so if you're local and need it same-day, come by or call ahead and we'll have it ready. We also ship nationwide if you're not in the area — most orders go out same or next business day.
Every filter we sell carries a 6+ month warranty, no hoops to jump through if something's actually defective. But warranty doesn't cover 'wrong filter for my truck,' so do yourself a favor and confirm the number off your old filter or your VIN before you hit order.
We've got parts guys who've been doing this a long time — if you're not sure whether FF5369 is right for your rig, give us a call and we'll help you nail it down before you spend the money.
FF5369 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to FF5369. 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 |
|---|---|
| Cross-Reference | P-EFF 3036 |
| Donaldson | ABPN10GFS1029W |
| Freightliner (OEM) | FF5369W |
| Alliance | N10G FF5369W |
| Aftermarket | P550463, P550757 |
Frequently asked questions
Does FF5369 fit my Freightliner Cascadia?
Likely, if your Cascadia's running a Detroit engine with this fuel filter housing — but Freightliner's used a few different fuel filter specs over the years depending on engine and model year. Pull the old filter's number or check your VIN against the parts book before ordering, since the last thing you want is a filter that doesn't seal right.
Is P550463 the same as the Freightliner FF5369W?
They cross-reference to the same filter spec — same thread, same seal diameter, same micron rating. Donaldson just uses their own numbering system instead of Freightliner's. If your old filter says either number, this is your part.
Why are there so many different numbers for what's supposedly the same filter?
Every manufacturer runs their own numbering system — Freightliner, Donaldson, Fleetguard, Alliance — even when they're building to the same spec. That's normal in this industry. The trick is confirming the numbers actually cross, which is what the table above is for. When in doubt, match against what's stamped on your old filter.
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.