Baldwin BD142 vs WIX 51261: Oil Filter Compatibility
Compare Baldwin BD142 and WIX 51261 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 1-12 thread.
Quick verdict
Candidate adds internal bypass; usually redundant with engine-mounted bypass
- 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 BD142 and WIX 51261 specifications
How matching is scored| Specification | Baldwin BD142 | WIX 51261 |
|---|---|---|
| Thread size | 1-12 | 1-12 |
| Gasket OD | 72 mm | 69.32 mm |
| Gasket ID | 61 mm | 61.34 mm |
| Can OD | 107.2 mm | 93.55 mm |
| Height | 130.2 mm | 131.2 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 1-12.
Gasket OD differs by 2.7 mm (Baldwin BD142: 72 mm, WIX 51261: 69.32 mm).
Gasket ID differs by 0.3 mm (Baldwin BD142: 61 mm, WIX 51261: 61.34 mm).
WIX 51261 is 1 mm taller (Baldwin BD142: 130.2 mm, WIX 51261: 131.2 mm) -- check clearance before substituting.
Can OD differs by 13.7 mm (Baldwin BD142: 107.2 mm, WIX 51261: 93.55 mm).
Bypass valve presence differs: WIX 51261 has one, Baldwin BD142 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.