K&N HP-2004 vs Champ PH488: Oil Filter Compatibility
Compare K&N HP-2004 and Champ PH488 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
Bypass presence unknown on one or both filters
- 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.
K&N HP-2004 and Champ PH488 specifications
How matching is scored| Specification | K&N HP-2004 | Champ PH488 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 70.1 mm |
| Gasket ID | 62 mm | 62.5 mm |
| Can OD | 93 mm | 93.73 mm |
| Height | 104 mm | 104.9 mm |
| Internal bypass valve | Unknown | No |
| Bypass PSID | Unknown | Not applicable |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.9 mm (K&N HP-2004: 71 mm, Champ PH488: 70.1 mm).
Gasket ID differs by 0.5 mm (K&N HP-2004: 62 mm, Champ PH488: 62.5 mm).
Champ PH488 is 0.9 mm taller (K&N HP-2004: 104 mm, Champ PH488: 104.9 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (K&N HP-2004: 93 mm, Champ PH488: 93.73 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.