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