What This Filter Is and Where It Lives
This is a spin-on style oil filter for the Detroit Diesel DD-series engines. If your Western Star 4700SF is running a DD13, DD15, or DD16, this is the filter bolted to the block, not some universal bypass canister.
Detroit changed part numbers on this filter a few times over the years as they revised the media inside — that's why you'll see A4721800509 and A4721800109 also called out for the same application. Don't let the different prefix throw you; check the number stamped on the filter you're pulling off, not just the model year.
Filter-Mart, Fleetguard, WIX, and Donaldson all built versions to match Detroit's spec on thread size, gasket seal diameter, and micron rating for this application.
How the Cross-Reference Numbers Line Up
The Fleetguard LF17474 and LF17511, WIX P7405, and Donaldson P551005 all cross to the same physical filter — same thread pitch, same base gasket OD, same media rating built for the DD engine oil system. These aren't 'close enough' numbers, they're built to the same print.
Where guys get burned is grabbing a filter off a shelf tag that says 'DD13' without checking the base plate diameter or thread size against the old filter. Detroit ran a couple different filter head designs across model years, so a filter that fits a 2015 DD15 might not thread onto a 2021 unit if the head was updated.
Bottom line: pull the old filter, read the number cast or printed on the metal end, and match it against what's on our shelf or in this cross-reference table before you order six of them for the shop.
Ordering From PartStop
We stock this filter in Tacoma and most orders that come in before early afternoon go out same day, whether that's a will-call pickup or a pallet going to a fleet yard in Spokane.
We ship nationwide too — doesn't matter if you're running a single truck or a yard full of 4700SFs, we'll get filters to you without you waiting on a dealer parts counter.
Every filter we sell carries our 6+ month warranty. If something's wrong with the part itself, we deal with it — no runaround. Just confirm the number against your VIN or your old filter before you order so we're not shipping back and forth.
A4731800909 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to A4731800909. 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 | A4721800509, A4721800109, P-EOF 2553 |
| Donaldson | P551005 |
| Fleetguard | LF17474, LF17511 |
| Filter-Mart | 13977 |
| Detroit Diesel | A4721841725 |
| Mercedes | A4721841825 |
| WIX | P7405 |
| Aftermarket | 25.156.00 |
Frequently asked questions
Does A4731800909 fit my 2017 Western Star 4700SF with a DD15?
Likely yes, but confirm by checking the number stamped on the oil filter currently on the truck, or pull the engine's VIN and check it against Detroit's application data. DD15 filter heads changed slightly across model years, so match the number, don't just match the engine name.
Is this the same as the Fleetguard LF17474?
Yes, LF17474 is built to the same spec — same thread, same seal diameter, same filtration rating for the DD13/DD15/DD16 application. It's a direct replacement for A4731800909, not just a similar filter.
Why are there so many different OEM numbers for what's supposed to be one filter?
Detroit revised the filter media and base plate a few times over the years without changing the engine model designation. A4721800509, A4721800109, and A4731800909 all cross to the same physical filter footprint — the number just changed as the internal spec got updated.
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.