Bosch 3300 vs Champ PH2808: Oil Filter Compatibility
Compare Bosch 3300 and Champ PH2808 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 M20x1.5 thread.
Quick verdict
Both use a M20x1.5 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 3300 and Champ PH2808 specifications
How matching is scored| Specification | Bosch 3300 | Champ PH2808 |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 63 mm | 63 mm |
| Gasket ID | 52 mm | 52.1 mm |
| Can OD | 68 mm | 74.73 mm |
| Height | 74.42 mm | 78.99 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 14 - 18 | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M20x1.5.
Gasket OD is identical at 63 mm.
Gasket ID differs by 0.1 mm (Bosch 3300: 52 mm, Champ PH2808: 52.1 mm).
Champ PH2808 is 4.6 mm taller (Bosch 3300: 74.42 mm, Champ PH2808: 78.99 mm) -- check clearance before substituting.
Can OD differs by 6.7 mm (Bosch 3300: 68 mm, Champ PH2808: 74.73 mm).
Both open their bypass valve in a comparable range: Bosch 3300 at 14-18 psi, Champ PH2808 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.