Baldwin B299 vs WIX 51231: Oil Filter Compatibility
Compare Baldwin B299 and WIX 51231 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
Both use a 1-12 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 B299 and WIX 51231 specifications
How matching is scored| Specification | Baldwin B299 | WIX 51231 |
|---|---|---|
| Thread size | 1-12 | 1-12 |
| Gasket OD | 72 mm | 71.98 mm |
| Gasket ID | 61 mm | 62.53 mm |
| Can OD | 93.7 mm | 92.96 mm |
| Height | 181.8 mm | 110.3 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 13 - 19 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 1-12.
Gasket OD is identical at 72 mm.
Gasket ID differs by 1.5 mm (Baldwin B299: 61 mm, WIX 51231: 62.53 mm).
Baldwin B299 is 71.5 mm taller (Baldwin B299: 181.8 mm, WIX 51231: 110.3 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (Baldwin B299: 93.7 mm, WIX 51231: 92.96 mm).
Bypass valve presence differs: WIX 51231 has one, Baldwin B299 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.