What You're Actually Buying
This is a full-flow spin-on oil filter for the Volvo D12 engine, and it carries over to Mack engines that share that filtration setup — same thread, same gasket seal, same media spec. Mack lists it under P550425 and LF17502 depending on which parts book you're pulling from, and Volvo's own number lines up with LFP8642 and P559647 in their system.
All five numbers on our list point at the same physical filter. Different manufacturers just stamped their own part number on the box over the years — Fleetguard, Mack, Volvo aftermarket supply — but the can, the thread pitch, and the media inside didn't change.
If you've got a D12 or the Mack equivalent in front of you, this is your filter. Doesn't matter if the truck's badged Volvo or Mack — it's the engine platform that matters here, not the hood ornament.
Why These Numbers Cross
The reason LF3654, P550425, LF17502, LFP8642 and P559647 all land on the same filter is straightforward — Fleetguard makes filters under contract for a lot of these truck makers, so the same core filter gets re-numbered for Mack's parts system and Volvo's parts system separately. It's a numbering issue, not a design issue.
Where you can get burned is thread size and gasket diameter if someone hands you a filter for a different engine family that happens to look similar on the shelf. Full-flow spin-ons for the D12/Mack platform have a specific thread and seal ID — don't assume just because two filters are close in height and diameter that the seal lands right. A quarter-inch off on gasket OD and you've got a slow weep that shows up three states down the road.
Rule of thumb: pull the number off the filter that's coming out of the truck right now, or check the engine's VIN-decoded spec sheet, and match it against this list before you order. Takes two minutes and saves you a comeback.
Ordering From Us
We keep this one in stock in Tacoma for same-day will-call if you're local — walk in, grab it, get back on the road. If you're not local, we ship nationwide and most orders go out same day if you order before early afternoon.
Comes with our standard 6+ month warranty. If it's the wrong filter for what's actually on your engine, we'll sort it — but confirm the number off your old filter or your engine's VIN spec before it goes in, because once it's been run with oil in it, that's not a returnable part.
LF3654 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to LF3654. 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 |
|---|---|
| Alliance | N10G LF3654 |
| Aftermarket | P550425, DBA5056, DBH6019, DBL7367, DBL7405, DBL7483, DBL7505, DBL7670, ELF3998, ELF6508 |
Frequently asked questions
Does LF3654 fit my Mack truck?
Depends on which engine's under the hood — LF3654 fits the Mack engines that share the D12-based filtration setup, cross-referenced under Mack's own P550425 and LF17502 numbers. Pull the filter that's on there now and check the number, or give us the engine serial off the tag and we'll confirm before you order.
Is this the same filter as the Alliance N10G LF3654?
Yes — Alliance's N10G LF3654 is the same physical filter, just packaged and numbered under their brand for Mack/Volvo dealer network parts counters. Same thread, same media, same fit.
What's the difference between P550425 and LF17502 — do I need to worry about which one my parts book lists?
No need to sweat it — both numbers point at this same filter, just different revisions of Mack's parts catalog over the years. Order by whichever number's in front of you, it's the same part.
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.