Fleetguard LF3378 vs Fleetguard LF3341: Oil Filter Compatibility
Compare Fleetguard LF3378 and Fleetguard LF3341 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 3/4-16 thread.
Quick verdict
Large bypass PSI mismatch: 22.8 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.
Fleetguard LF3378 and Fleetguard LF3341 specifications
How matching is scored| Specification | Fleetguard LF3378 | Fleetguard LF3341 |
|---|---|---|
| Thread size | 3/4-16 UNF-2B | 3/4-16 UNF-2B |
| Gasket OD | 71.98 mm | 71.98 mm |
| Gasket ID | 62.53 mm | 62.53 mm |
| Can OD | 94 mm | 95 mm |
| Height | 92 mm | 108 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 36.26 | 13.49 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD is identical at 71.98 mm.
Gasket ID is identical at 62.53 mm.
Fleetguard LF3341 is 16 mm taller (Fleetguard LF3378: 92 mm, Fleetguard LF3341: 108 mm) -- check clearance before substituting.
Can OD differs by 1 mm (Fleetguard LF3378: 94 mm, Fleetguard LF3341: 95 mm).
Both open their bypass valve in a comparable range: Fleetguard LF3378 at 36.26-36.26 psi, Fleetguard LF3341 at 13.49-13.49 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.