MAHLE OC217 vs Baldwin B131: Oil Filter Compatibility
Compare MAHLE OC217 and Baldwin B131 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
Both use a 3/4-16 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.
MAHLE OC217 and Baldwin B131 specifications
How matching is scored| Specification | MAHLE OC217 | Baldwin B131 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 71.98 mm |
| Gasket ID | 62.5 mm | 62.53 mm |
| Can OD | 65.5 mm | 77 mm |
| Height | 85 mm | 87.3 mm |
| Internal bypass valve | Unknown | Yes |
| Bypass PSID | Unknown | 8 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 1 mm (MAHLE OC217: 71 mm, Baldwin B131: 71.98 mm).
Gasket ID is identical at 62.5 mm.
Baldwin B131 is 2.3 mm taller (MAHLE OC217: 85 mm, Baldwin B131: 87.3 mm) -- check clearance before substituting.
Can OD differs by 11.5 mm (MAHLE OC217: 65.5 mm, Baldwin B131: 77 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.