K&N HP-2004 vs Baldwin B358: Oil Filter Compatibility
Compare K&N HP-2004 and Baldwin B358 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.
K&N HP-2004 and Baldwin B358 specifications
How matching is scored| Specification | K&N HP-2004 | Baldwin B358 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 71.4 mm |
| Gasket ID | 62 mm | 62.7 mm |
| Can OD | 93 mm | 93.7 mm |
| Height | 104 mm | 111.1 mm |
| Internal bypass valve | Unknown | Yes |
| Bypass PSID | Unknown | 2 |
| Anti-drainback valve | Yes | No |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.4 mm (K&N HP-2004: 71 mm, Baldwin B358: 71.4 mm).
Gasket ID differs by 0.7 mm (K&N HP-2004: 62 mm, Baldwin B358: 62.7 mm).
Baldwin B358 is 7.1 mm taller (K&N HP-2004: 104 mm, Baldwin B358: 111.1 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (K&N HP-2004: 93 mm, Baldwin B358: 93.7 mm).
Anti-drainback valve differs: K&N HP-2004 has one, Baldwin B358 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.