Champ PH59 vs WIX 51258: Oil Filter Compatibility
Compare Champ PH59 and WIX 51258 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
Candidate adds internal bypass; usually redundant with engine-mounted bypass
- 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.
Champ PH59 and WIX 51258 specifications
How matching is scored| Specification | Champ PH59 | WIX 51258 |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 70.6 mm | 71.98 mm |
| Gasket ID | 62.2 mm | 62.53 mm |
| Can OD | 93.73 mm | 92.96 mm |
| Height | 104.9 mm | 110.2 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 12 - 15 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD differs by 1.4 mm (Champ PH59: 70.6 mm, WIX 51258: 71.98 mm).
Gasket ID differs by 0.3 mm (Champ PH59: 62.2 mm, WIX 51258: 62.53 mm).
WIX 51258 is 5.3 mm taller (Champ PH59: 104.9 mm, WIX 51258: 110.2 mm) -- check clearance before substituting.
Can OD differs by 0.8 mm (Champ PH59: 93.73 mm, WIX 51258: 92.96 mm).
Bypass valve presence differs: WIX 51258 has one, Champ PH59 does not.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.