Baldwin B1446 vs Baldwin B161-S: Oil Filter Compatibility
Compare Baldwin B1446 and Baldwin B161-S 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 M20x1.5 thread.
Quick verdict
Candidate adds ADBV
- 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 B1446 and Baldwin B161-S specifications
How matching is scored| Specification | Baldwin B1446 | Baldwin B161-S |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 64 mm | 64 mm |
| Gasket ID | 54.1 mm | 54.1 mm |
| Can OD | 94.5 mm | 77 mm |
| Height | 97.6 mm | 103.2 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 20 | 20 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are M20x1.5.
Gasket OD is identical at 64 mm.
Gasket ID is identical at 54.1 mm.
Baldwin B161-S is 5.6 mm taller (Baldwin B1446: 97.6 mm, Baldwin B161-S: 103.2 mm) -- check clearance before substituting.
Can OD differs by 17.5 mm (Baldwin B1446: 94.5 mm, Baldwin B161-S: 77 mm).
Both open their bypass valve in a comparable range: Baldwin B1446 at 20-20 psi, Baldwin B161-S at 20-20 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.