Baldwin B99 vs WIX WL10446: Oil Filter Compatibility
Compare Baldwin B99 and WIX WL10446 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 11/2-16 thread.
Quick verdict
Both use a 11/2-16 thread.
- 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 B99 and WIX WL10446 specifications
How matching is scored| Specification | Baldwin B99 | WIX WL10446 |
|---|---|---|
| Thread size | 11/2-16 | 11/2-16 |
| Gasket OD | 110 mm | 108.7 mm |
| Gasket ID | 98 mm | 99.77 mm |
| Can OD | 136.5 mm | 135.7 mm |
| Height | 307.2 mm | 210 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 14 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 11/2-16.
Gasket OD differs by 1.3 mm (Baldwin B99: 110 mm, WIX WL10446: 108.7 mm).
Gasket ID differs by 1.8 mm (Baldwin B99: 98 mm, WIX WL10446: 99.77 mm).
Baldwin B99 is 97.2 mm taller (Baldwin B99: 307.2 mm, WIX WL10446: 210 mm) -- check clearance before substituting.
Can OD differs by 0.8 mm (Baldwin B99: 136.5 mm, WIX WL10446: 135.7 mm).
Bypass valve presence differs: WIX WL10446 has one, Baldwin B99 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.