Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A vs Donaldson P550008: Oil Filter Compatibility
Compare Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A and Donaldson P550008 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.
Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A and Donaldson P550008 specifications
How matching is scored| Specification | Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A | Donaldson P550008 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 72.4 mm |
| Gasket ID | 62 mm | 62 mm |
| Can OD | 74.19 mm | 93 mm |
| Height | 136.4 mm | 136 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 - 11 | 12 - 15 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 1.4 mm (Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A: 71 mm, Donaldson P550008: 72.4 mm).
Gasket ID is identical at 62 mm.
Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A is 0.4 mm taller (Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A: 136.4 mm, Donaldson P550008: 136 mm) -- check clearance before substituting.
Can OD differs by 18.8 mm (Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A: 74.19 mm, Donaldson P550008: 93 mm).
Both open their bypass valve in a comparable range: Mobil 1 (ExxonMobil / Mann+Hummel) M1-301A at 8-11 psi, Donaldson P550008 at 12-15 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.