WIX 51049 vs Baldwin B39: Oil Filter Compatibility
Compare WIX 51049 and Baldwin B39 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 13/16-16 thread.
Quick verdict
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.
WIX 51049 and Baldwin B39 specifications
How matching is scored| Specification | WIX 51049 | Baldwin B39 |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 71.98 mm | 71.4 mm |
| Gasket ID | 62.53 mm | 62.7 mm |
| Can OD | 92.96 mm | 93.7 mm |
| Height | 131.5 mm | 111.1 mm |
| Internal bypass valve | No | No |
| Bypass PSID | Not applicable | Not applicable |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD differs by 0.6 mm (WIX 51049: 71.98 mm, Baldwin B39: 71.4 mm).
Gasket ID differs by 0.2 mm (WIX 51049: 62.53 mm, Baldwin B39: 62.7 mm).
WIX 51049 is 20.4 mm taller (WIX 51049: 131.5 mm, Baldwin B39: 111.1 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (WIX 51049: 92.96 mm, Baldwin B39: 93.7 mm).
Anti-drainback valve differs: Baldwin B39 has one, WIX 51049 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.