Baldwin B178 vs WIX 51214: Oil Filter Compatibility
Compare Baldwin B178 and WIX 51214 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: 20.5 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.
Baldwin B178 and WIX 51214 specifications
How matching is scored| Specification | Baldwin B178 | WIX 51214 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 69.9 mm | 69.44 mm |
| Gasket ID | 60.9 mm | 61.72 mm |
| Can OD | 76.2 mm | 74.24 mm |
| Height | 130.2 mm | 122.6 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 30 | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.5 mm (Baldwin B178: 69.9 mm, WIX 51214: 69.44 mm).
Gasket ID differs by 0.8 mm (Baldwin B178: 60.9 mm, WIX 51214: 61.72 mm).
Baldwin B178 is 7.6 mm taller (Baldwin B178: 130.2 mm, WIX 51214: 122.6 mm) -- check clearance before substituting.
Can OD differs by 2 mm (Baldwin B178: 76.2 mm, WIX 51214: 74.24 mm).
Both open their bypass valve in a comparable range: Baldwin B178 at 30-30 psi, WIX 51214 at 8-11 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.