MAHLE OC 25 vs WIX 51085: Oil Filter Compatibility
Compare MAHLE OC 25 and WIX 51085 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
Large bypass PSI mismatch: 22.5 psi
- 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 OC 25 and WIX 51085 specifications
How matching is scored| Specification | MAHLE OC 25 | WIX 51085 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 71.98 mm |
| Gasket ID | 61.7 mm | 62.53 mm |
| Can OD | 93.98 mm | 93 mm |
| Height | 98.55 mm | 97.43 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 32 | 8 - 11 |
| 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 OC 25: 71 mm, WIX 51085: 71.98 mm).
Gasket ID differs by 0.8 mm (MAHLE OC 25: 61.7 mm, WIX 51085: 62.53 mm).
MAHLE OC 25 is 1.1 mm taller (MAHLE OC 25: 98.55 mm, WIX 51085: 97.43 mm) -- check clearance before substituting.
Can OD differs by 1 mm (MAHLE OC 25: 93.98 mm, WIX 51085: 93 mm).
Both open their bypass valve in a comparable range: MAHLE OC 25 at 32-32 psi, WIX 51085 at 8-11 psi -- these ranges do not overlap.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.