WIX 51675 vs Fleetguard LF3689: Oil Filter Compatibility
Compare WIX 51675 and Fleetguard LF3689 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 M26x1.5 thread.
Quick verdict
Closest known dimensional difference: gasket ID +2.5 mm. Verify application-specific requirements before substituting.
- 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.
WIX 51675 and Fleetguard LF3689 specifications
How matching is scored| Specification | WIX 51675 | Fleetguard LF3689 |
|---|---|---|
| Thread size | M26x1.5 | M26x1.5 |
| Gasket OD | 71.98 mm | 72.14 mm |
| Gasket ID | 62.53 mm | 65 mm |
| Can OD | 108.8 mm | 105 mm |
| Height | 151.9 mm | 150 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 - 15 | 10 - 12 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M26x1.5.
Gasket OD differs by 0.2 mm (WIX 51675: 71.98 mm, Fleetguard LF3689: 72.14 mm).
Gasket ID differs by 2.5 mm (WIX 51675: 62.53 mm, Fleetguard LF3689: 65 mm).
WIX 51675 is 1.9 mm taller (WIX 51675: 151.9 mm, Fleetguard LF3689: 150 mm) -- check clearance before substituting.
Can OD differs by 3.8 mm (WIX 51675: 108.8 mm, Fleetguard LF3689: 105 mm).
Both open their bypass valve in a comparable range: WIX 51675 at 12-15 psi, Fleetguard LF3689 at 10-12 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.