Champ PH488 vs Baldwin B74: Oil Filter Compatibility
Compare Champ PH488 and Baldwin B74 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.
Champ PH488 and Baldwin B74 specifications
How matching is scored| Specification | Champ PH488 | Baldwin B74 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 70.1 mm | 71.4 mm |
| Gasket ID | 62.5 mm | 62.7 mm |
| Can OD | 93.73 mm | 95.3 mm |
| Height | 104.9 mm | 100.8 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 20 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 1.3 mm (Champ PH488: 70.1 mm, Baldwin B74: 71.4 mm).
Gasket ID differs by 0.2 mm (Champ PH488: 62.5 mm, Baldwin B74: 62.7 mm).
Champ PH488 is 4.1 mm taller (Champ PH488: 104.9 mm, Baldwin B74: 100.8 mm) -- check clearance before substituting.
Can OD differs by 1.6 mm (Champ PH488: 93.73 mm, Baldwin B74: 95.3 mm).
Bypass valve presence differs: Baldwin B74 has one, Champ PH488 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.