Baldwin B56 vs ACDelco PF48E: Oil Filter Compatibility
Compare Baldwin B56 and ACDelco PF48E 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 M22x1.5 thread.
Quick verdict
Both use a M22x1.5 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.
Baldwin B56 and ACDelco PF48E specifications
How matching is scored| Specification | Baldwin B56 | ACDelco PF48E |
|---|---|---|
| Thread size | M22x1.5 | M22x1.5 |
| Gasket OD | 69.9 mm | 68.6 mm |
| Gasket ID | 60.9 mm | 61 mm |
| Can OD | 76.2 mm | 74.3 mm |
| Height | 123 mm | 78.74 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 19 | 14 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are M22x1.5.
Gasket OD differs by 1.3 mm (Baldwin B56: 69.9 mm, ACDelco PF48E: 68.6 mm).
Gasket ID differs by 0.1 mm (Baldwin B56: 60.9 mm, ACDelco PF48E: 61 mm).
Baldwin B56 is 44.3 mm taller (Baldwin B56: 123 mm, ACDelco PF48E: 78.74 mm) -- check clearance before substituting.
Can OD differs by 1.9 mm (Baldwin B56: 76.2 mm, ACDelco PF48E: 74.3 mm).
Both open their bypass valve in a comparable range: Baldwin B56 at 19-19 psi, ACDelco PF48E at 14-14 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.