Baldwin B33 vs Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: Oil Filter Compatibility
Compare Baldwin B33 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A 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
Closest known dimensional difference: gasket OD -2 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.
Baldwin B33 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A specifications
How matching is scored| Specification | Baldwin B33 | Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71.98 mm | 70 mm |
| Gasket ID | 62.53 mm | 62 mm |
| Can OD | 68.3 mm | 68.33 mm |
| Height | 76.2 mm | 75.69 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 14 | 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 2 mm (Baldwin B33: 71.98 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 70 mm).
Gasket ID differs by 0.5 mm (Baldwin B33: 62.53 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 62 mm).
Baldwin B33 is 0.5 mm taller (Baldwin B33: 76.2 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 75.69 mm) -- check clearance before substituting.
Can OD is identical at 68.3 mm.
Both open their bypass valve in a comparable range: Baldwin B33 at 14-14 psi, Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A 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.