Baldwin B156 vs FRAM PH48: Oil Filter Compatibility
Compare Baldwin B156 and FRAM PH48 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
Closest known dimensional difference: height +4.4 mm. Verify application-specific requirements before substituting.
- 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 B156 and FRAM PH48 specifications
How matching is scored| Specification | Baldwin B156 | FRAM PH48 |
|---|---|---|
| Thread size | M22x1.5 | M22x1.5 |
| Gasket OD | 72 mm | 71.1 mm |
| Gasket ID | 62 mm | 62.5 mm |
| Can OD | 93.7 mm | 76 mm |
| Height | 82.6 mm | 87 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 20 | 15 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M22x1.5.
Gasket OD differs by 0.9 mm (Baldwin B156: 72 mm, FRAM PH48: 71.1 mm).
Gasket ID differs by 0.5 mm (Baldwin B156: 62 mm, FRAM PH48: 62.5 mm).
FRAM PH48 is 4.4 mm taller (Baldwin B156: 82.6 mm, FRAM PH48: 87 mm) -- check clearance before substituting.
Can OD differs by 17.7 mm (Baldwin B156: 93.7 mm, FRAM PH48: 76 mm).
Both open their bypass valve in a comparable range: Baldwin B156 at 20-20 psi, FRAM PH48 at 15-15 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.