Donaldson P550518 vs K&N HP-3002: Oil Filter Compatibility
Compare Donaldson P550518 and K&N HP-3002 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
Both use a 13/16-16 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.
Donaldson P550518 and K&N HP-3002 specifications
How matching is scored| Specification | Donaldson P550518 | K&N HP-3002 |
|---|---|---|
| Thread size | 13/16-16 | 13/16-16 |
| Gasket OD | 88 mm | 88 mm |
| Gasket ID | 79 mm | 79 mm |
| Can OD | 94 mm | 96 mm |
| Height | 136 mm | 140 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 - 15 | 11 - 17 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 13/16-16.
Gasket OD is identical at 88 mm.
Gasket ID is identical at 79 mm.
K&N HP-3002 is 4 mm taller (Donaldson P550518: 136 mm, K&N HP-3002: 140 mm) -- check clearance before substituting.
Can OD differs by 2 mm (Donaldson P550518: 94 mm, K&N HP-3002: 96 mm).
Both open their bypass valve in a comparable range: Donaldson P550518 at 12-15 psi, K&N HP-3002 at 11-17 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.