NAPA Gold 1191 vs Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A: Oil Filter Compatibility
Compare NAPA Gold 1191 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A 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.
NAPA Gold 1191 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A specifications
How matching is scored| Specification | NAPA Gold 1191 | Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 69.6 mm | 71 mm |
| Gasket ID | 60.2 mm | 62 mm |
| Can OD | 92.96 mm | 93.73 mm |
| Height | 131.5 mm | 95.25 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 3/4-16.
Gasket OD differs by 1.4 mm (NAPA Gold 1191: 69.6 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A: 71 mm).
Gasket ID differs by 1.8 mm (NAPA Gold 1191: 60.2 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A: 62 mm).
NAPA Gold 1191 is 36.2 mm taller (NAPA Gold 1191: 131.5 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A: 95.25 mm) -- check clearance before substituting.
Can OD differs by 0.8 mm (NAPA Gold 1191: 92.96 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A: 93.73 mm).
Both open their bypass valve in a comparable range: NAPA Gold 1191 at 13-19 psi, Mobil 1 (ExxonMobil / Mann+Hummel) M1-204A 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.