Bosch 3325 vs Champ PH2835: Oil Filter Compatibility
Compare Bosch 3325 and Champ PH2835 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.
Bosch 3325 and Champ PH2835 specifications
How matching is scored| Specification | Bosch 3325 | Champ PH2835 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 63 mm | 62.7 mm |
| Gasket ID | 52 mm | 54.6 mm |
| Can OD | 68 mm | 76.2 mm |
| Height | 89.41 mm | 89.66 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 - 15 | 14 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.3 mm (Bosch 3325: 63 mm, Champ PH2835: 62.7 mm).
Gasket ID differs by 2.6 mm (Bosch 3325: 52 mm, Champ PH2835: 54.6 mm).
Champ PH2835 is 0.3 mm taller (Bosch 3325: 89.41 mm, Champ PH2835: 89.66 mm) -- check clearance before substituting.
Can OD differs by 8.2 mm (Bosch 3325: 68 mm, Champ PH2835: 76.2 mm).
Both open their bypass valve in a comparable range: Bosch 3325 at 12-15 psi, Champ PH2835 at 14-14 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.