Baldwin B99-SS vs Baldwin BT287: Oil Filter Compatibility
Compare Baldwin B99-SS and Baldwin BT287 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 11/2-16 thread.
Quick verdict
Both use a 11/2-16 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 B99-SS and Baldwin BT287 specifications
How matching is scored| Specification | Baldwin B99-SS | Baldwin BT287 |
|---|---|---|
| Thread size | 11/2-16 | 11/2-16 |
| Gasket OD | 110 mm | 110 mm |
| Gasket ID | 98 mm | 98 mm |
| Can OD | 136.5 mm | 127.8 mm |
| Height | 307.2 mm | 177.8 mm |
| Internal bypass valve | No | No |
| Bypass PSID | Not applicable | Not applicable |
| Anti-drainback valve | No | No |
What matters in this specific comparison
Thread size matches: both are 11/2-16.
Gasket OD is identical at 110 mm.
Gasket ID is identical at 98 mm.
Baldwin B99-SS is 129.4 mm taller (Baldwin B99-SS: 307.2 mm, Baldwin BT287: 177.8 mm) -- check clearance before substituting.
Can OD differs by 8.7 mm (Baldwin B99-SS: 136.5 mm, Baldwin BT287: 127.8 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.