K&N HP-2006 vs Bosch 3423: Oil Filter Compatibility
Compare K&N HP-2006 and Bosch 3423 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 13/16-16 thread.
Quick verdict
Bypass presence unknown on one or both filters
- 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-2006 and Bosch 3423 specifications
How matching is scored| Specification | K&N HP-2006 | Bosch 3423 |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 70 mm | 70 mm |
| Gasket ID | 62 mm | 62 mm |
| Can OD | 76 mm | 75.01 mm |
| Height | 116 mm | 103.99 mm |
| Internal bypass valve | Unknown | No |
| Bypass PSID | Unknown | Not applicable |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD is identical at 70 mm.
Gasket ID is identical at 62 mm.
K&N HP-2006 is 12 mm taller (K&N HP-2006: 116 mm, Bosch 3423: 103.99 mm) -- check clearance before substituting.
Can OD differs by 1 mm (K&N HP-2006: 76 mm, Bosch 3423: 75.01 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.