Bosch 3332 vs Champ PH51A: Oil Filter Compatibility
Compare Bosch 3332 and Champ PH51A 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
Both use a 13/16-16 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.
Bosch 3332 and Champ PH51A specifications
How matching is scored| Specification | Bosch 3332 | Champ PH51A |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 71 mm | 70.6 mm |
| Gasket ID | 62 mm | 62.2 mm |
| Can OD | 75.01 mm | 74.68 mm |
| Height | 85.34 mm | 78.99 mm |
| Internal bypass valve | No | No |
| Bypass PSID | Not applicable | Not applicable |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD differs by 0.4 mm (Bosch 3332: 71 mm, Champ PH51A: 70.6 mm).
Gasket ID differs by 0.2 mm (Bosch 3332: 62 mm, Champ PH51A: 62.2 mm).
Bosch 3332 is 6.4 mm taller (Bosch 3332: 85.34 mm, Champ PH51A: 78.99 mm) -- check clearance before substituting.
Can OD differs by 0.3 mm (Bosch 3332: 75.01 mm, Champ PH51A: 74.68 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.