Baldwin B45 vs WIX 51376: Oil Filter Compatibility
Compare Baldwin B45 and WIX 51376 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 11/8-16 thread.
Quick verdict
Candidate adds internal bypass; usually redundant with engine-mounted bypass · 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.
Baldwin B45 and WIX 51376 specifications
How matching is scored| Specification | Baldwin B45 | WIX 51376 |
|---|---|---|
| Thread size | 11/8-16 | 11/8-16 |
| Gasket OD | 102 mm | 100.8 mm |
| Gasket ID | 92 mm | 91.11 mm |
| Can OD | 109.5 mm | 108.8 mm |
| Height | 232.6 mm | 166.9 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 13 - 19 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 11/8-16.
Gasket OD differs by 1.2 mm (Baldwin B45: 102 mm, WIX 51376: 100.8 mm).
Gasket ID differs by 0.9 mm (Baldwin B45: 92 mm, WIX 51376: 91.11 mm).
Baldwin B45 is 65.7 mm taller (Baldwin B45: 232.6 mm, WIX 51376: 166.9 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (Baldwin B45: 109.5 mm, WIX 51376: 108.8 mm).
Bypass valve presence differs: WIX 51376 has one, Baldwin B45 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.