Baldwin B105 vs WIX 57521: Oil Filter Compatibility
Compare Baldwin B105 and WIX 57521 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 11/2-12 thread.
Quick verdict
Closest known dimensional difference: height -31.5 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.
Baldwin B105 and WIX 57521 specifications
How matching is scored| Specification | Baldwin B105 | WIX 57521 |
|---|---|---|
| Thread size | 11/2-12 | 11/2-12 |
| Gasket OD | 111 mm | 109.7 mm |
| Gasket ID | 100 mm | 96.52 mm |
| Can OD | 118.3 mm | 118.6 mm |
| Height | 159.5 mm | 128 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 11/2-12.
Gasket OD differs by 1.3 mm (Baldwin B105: 111 mm, WIX 57521: 109.7 mm).
Gasket ID differs by 3.5 mm (Baldwin B105: 100 mm, WIX 57521: 96.52 mm).
Baldwin B105 is 31.5 mm taller (Baldwin B105: 159.5 mm, WIX 57521: 128 mm) -- check clearance before substituting.
Can OD differs by 0.3 mm (Baldwin B105: 118.3 mm, WIX 57521: 118.6 mm).
Both open their bypass valve in a comparable range: Baldwin B105 at 8-8 psi, WIX 57521 at 8-11 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.