ACDelco PF52 vs Fleetguard LF779: Oil Filter Compatibility
Compare ACDelco PF52 and Fleetguard LF779 oil filters by compatibility, dimensions, thread size, gasket fit, bypass valve, anti-drainback valve status, and match confidence. Use this comparison as a fitment review, not as an automatic substitution guarantee. Both use a M18x1.5 thread.
Quick verdict
Candidate adds ADBV
- Thread size is the first hard-fit check for any comparison of spin-on filters.
- Gasket OD and gasket ID are the most important seal-related dimensions.
- Height differences can matter for clearance even when thread and gasket fit appear close.
- Bypass and anti-drainback differences may be important, depending on the application.
ACDelco PF52 and Fleetguard LF779 specifications
How matching is scored| Specification | ACDelco PF52 | Fleetguard LF779 |
|---|---|---|
| Thread size | M18x1.5 | M18x1.5 |
| Gasket OD | 70 mm | 71.88 mm |
| Gasket ID | 61 mm | 62.48 mm |
| Can OD | 76.2 mm | 76 mm |
| Height | 127 mm | 117 mm |
| Internal bypass valve | No | No |
| Bypass PSID | Not applicable | Not applicable |
| Anti-drainback valve | Yes | No |
What matters in this specific comparison
Thread size matches: both are M18x1.5.
Gasket OD differs by 1.9 mm (ACDelco PF52: 70 mm, Fleetguard LF779: 71.88 mm).
Gasket ID differs by 1.5 mm (ACDelco PF52: 61 mm, Fleetguard LF779: 62.48 mm).
ACDelco PF52 is 10 mm taller (ACDelco PF52: 127 mm, Fleetguard LF779: 117 mm) -- check clearance before substituting.
Can OD differs by 0.2 mm (ACDelco PF52: 76.2 mm, Fleetguard LF779: 76 mm).
Anti-drainback valve differs: ACDelco PF52 has one, Fleetguard LF779 does not.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.