FRAM P1655 vs Fleetguard LF4056: Oil Filter Compatibility
Compare FRAM P1655 and Fleetguard LF4056 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 1-12 thread.
Quick verdict
Large bypass PSI mismatch: 24.3 psi
- 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.
FRAM P1655 and Fleetguard LF4056 specifications
How matching is scored| Specification | FRAM P1655 | Fleetguard LF4056 |
|---|---|---|
| Thread size | 1"-12UNF | 1-12 UNF-2B |
| Gasket OD | 71.1 mm | 72 mm |
| Gasket ID | 62.5 mm | 62.5 mm |
| Can OD | 94 mm | 94 mm |
| Height | 133.4 mm | 142 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 | 36.26 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 1-12.
Gasket OD differs by 0.9 mm (FRAM P1655: 71.1 mm, Fleetguard LF4056: 72 mm).
Gasket ID is identical at 62.5 mm.
Fleetguard LF4056 is 8.6 mm taller (FRAM P1655: 133.4 mm, Fleetguard LF4056: 142 mm) -- check clearance before substituting.
Can OD is identical at 94 mm.
Both open their bypass valve in a comparable range: FRAM P1655 at 12-12 psi, Fleetguard LF4056 at 36.26-36.26 psi -- these ranges do not overlap.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.