Bosch 3422 vs Baldwin BT215: Oil Filter Compatibility
Compare Bosch 3422 and Baldwin BT215 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
Closest known dimensional difference: height -9.8 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.
Bosch 3422 and Baldwin BT215 specifications
How matching is scored| Specification | Bosch 3422 | Baldwin BT215 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 70 mm | 69.9 mm |
| Gasket ID | 61 mm | 60.9 mm |
| Can OD | 75.01 mm | 76.2 mm |
| Height | 120.4 mm | 130.2 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 - 15 | 8 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.1 mm (Bosch 3422: 70 mm, Baldwin BT215: 69.9 mm).
Gasket ID differs by 0.1 mm (Bosch 3422: 61 mm, Baldwin BT215: 60.9 mm).
Baldwin BT215 is 9.8 mm taller (Bosch 3422: 120.4 mm, Baldwin BT215: 130.2 mm) -- check clearance before substituting.
Can OD differs by 1.2 mm (Bosch 3422: 75.01 mm, Baldwin BT215: 76.2 mm).
Both open their bypass valve in a comparable range: Bosch 3422 at 12-15 psi, Baldwin BT215 at 8-8 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.