Baldwin B1407 vs Donaldson P550335: Oil Filter Compatibility
Compare Baldwin B1407 and Donaldson P550335 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.
Baldwin B1407 and Donaldson P550335 specifications
How matching is scored| Specification | Baldwin B1407 | Donaldson P550335 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 69.9 mm | 70 mm |
| Gasket ID | 60.9 mm | 60 mm |
| Can OD | 77 mm | 76 mm |
| Height | 88.9 mm | 86 mm |
| Internal bypass valve | No | No |
| Bypass PSID | Not applicable | Not applicable |
| Anti-drainback valve | Yes | No |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.1 mm (Baldwin B1407: 69.9 mm, Donaldson P550335: 70 mm).
Gasket ID differs by 0.9 mm (Baldwin B1407: 60.9 mm, Donaldson P550335: 60 mm).
Baldwin B1407 is 2.9 mm taller (Baldwin B1407: 88.9 mm, Donaldson P550335: 86 mm) -- check clearance before substituting.
Can OD differs by 1 mm (Baldwin B1407: 77 mm, Donaldson P550335: 76 mm).
Anti-drainback valve differs: Baldwin B1407 has one, Donaldson P550335 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.