WIX 51794MP vs Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A: Oil Filter Compatibility
Compare WIX 51794MP and Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A 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 13/16-16 thread.
Quick verdict
Closest known dimensional difference: height -62 mm. Verify application-specific requirements before substituting.
- 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.
WIX 51794MP and Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A specifications
How matching is scored| Specification | WIX 51794MP | Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 87.48 mm | 88 mm |
| Gasket ID | 78.74 mm | 79 mm |
| Can OD | 93.32 mm | 93.73 mm |
| Height | 198.7 mm | 136.65 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 13 - 19 | 12 - 15 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD differs by 0.5 mm (WIX 51794MP: 87.48 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A: 88 mm).
Gasket ID differs by 0.3 mm (WIX 51794MP: 78.74 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A: 79 mm).
WIX 51794MP is 62 mm taller (WIX 51794MP: 198.7 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A: 136.65 mm) -- check clearance before substituting.
Can OD differs by 0.4 mm (WIX 51794MP: 93.32 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A: 93.73 mm).
Both open their bypass valve in a comparable range: WIX 51794MP at 13-19 psi, Mobil 1 (ExxonMobil / Mann+Hummel) M1-303A at 12-15 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.