FRAM HP1 vs K&N HP-3001: Oil Filter Compatibility
Compare FRAM HP1 and K&N HP-3001 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
Large bypass PSI mismatch: 8 psi
- 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.
FRAM HP1 and K&N HP-3001 specifications
How matching is scored| Specification | FRAM HP1 | K&N HP-3001 |
|---|---|---|
| Thread size | 3/4"-16 | 3/4-16 |
| Gasket OD | 71 mm | 71 mm |
| Gasket ID | 61 mm | 62 mm |
| Can OD | 95 mm | 97 mm |
| Height | 143 mm | 138 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 22 | 11 - 17 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD is identical at 71 mm.
Gasket ID differs by 1 mm (FRAM HP1: 61 mm, K&N HP-3001: 62 mm).
FRAM HP1 is 5 mm taller (FRAM HP1: 143 mm, K&N HP-3001: 138 mm) -- check clearance before substituting.
Can OD differs by 2 mm (FRAM HP1: 95 mm, K&N HP-3001: 97 mm).
Both open their bypass valve in a comparable range: FRAM HP1 at 22-22 psi, K&N HP-3001 at 11-17 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.