FRAM PH2 vs Donaldson P550965: Oil Filter Compatibility
Compare FRAM PH2 and Donaldson P550965 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 M22x1.5 thread.
Quick verdict
Both use a M22x1.5 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.
FRAM PH2 and Donaldson P550965 specifications
How matching is scored| Specification | FRAM PH2 | Donaldson P550965 |
|---|---|---|
| Thread size | M22X1,5 | M22x1.5 |
| Gasket OD | 71.1 mm | 71 mm |
| Gasket ID | 62 mm | 61 mm |
| Can OD | 93 mm | 93 mm |
| Height | 97 mm | 91 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 14.504 | 12 - 17 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M22x1.5.
Gasket OD differs by 0.1 mm (FRAM PH2: 71.1 mm, Donaldson P550965: 71 mm).
Gasket ID differs by 1 mm (FRAM PH2: 62 mm, Donaldson P550965: 61 mm).
FRAM PH2 is 6 mm taller (FRAM PH2: 97 mm, Donaldson P550965: 91 mm) -- check clearance before substituting.
Can OD is identical at 93 mm.
Both open their bypass valve in a comparable range: FRAM PH2 at 14.504-14.504 psi, Donaldson P550965 at 12-17 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.