MANN-FILTER W 930/21 vs MAHLE OC 25: Oil Filter Compatibility
Compare MANN-FILTER W 930/21 and MAHLE OC 25 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.
Quick verdict
These filters may still be worth comparing, but thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements should be reviewed before substitution.
- 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.
MANN-FILTER W 930/21 and MAHLE OC 25 specifications
| Specification | MANN-FILTER W 930/21 | MAHLE OC 25 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71.5 mm | 71 mm |
| Gasket ID | 62.5 mm | 61.7 mm |
| Can OD | 94.52 mm | 93.98 mm |
| Height | 113.67 mm | 98.55 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 33 | 32 |
| Anti-drainback valve | Yes | Yes |
What matters most in this comparison?
Thread match: A direct spin-on substitute starts with the same thread size. If the threads differ, the comparison stops there.
Gasket fit: Even when thread size matches, the gasket outside diameter and inside diameter still control whether the filter seals safely against the mounting surface.
Height difference: Small height differences may be acceptable, but longer filters can create clearance problems in tighter installations.
Valve behavior: Bypass and anti-drainback differences can matter in real-world service, especially on cold start or in applications sensitive to oil drain-back.
Related filter pages
- MANN-FILTER W 930/21 oil filter cross reference
- MAHLE OC 25 oil filter cross reference
- Baldwin B1429 oil filter cross reference
- WIX 51084 oil filter cross reference
- MAHLE OC 553 oil filter cross reference
- MANN-FILTER W 930/13 oil filter cross reference
- MANN-FILTER W 930/20 oil filter cross reference
- MANN-FILTER W 940/25 oil filter cross reference
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.