Champ PH820 vs Donaldson P550965: Oil Filter Compatibility
Compare Champ PH820 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.
Champ PH820 and Donaldson P550965 specifications
How matching is scored| Specification | Champ PH820 | Donaldson P550965 |
|---|---|---|
| Thread size | M22x1.5 | M22x1.5 |
| Gasket OD | 70.4 mm | 71 mm |
| Gasket ID | 62.2 mm | 61 mm |
| Can OD | 93.73 mm | 93 mm |
| Height | 97.79 mm | 91 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 | 12 - 17 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M22x1.5.
Gasket OD differs by 0.6 mm (Champ PH820: 70.4 mm, Donaldson P550965: 71 mm).
Gasket ID differs by 1.2 mm (Champ PH820: 62.2 mm, Donaldson P550965: 61 mm).
Champ PH820 is 6.8 mm taller (Champ PH820: 97.79 mm, Donaldson P550965: 91 mm) -- check clearance before substituting.
Can OD differs by 0.7 mm (Champ PH820: 93.73 mm, Donaldson P550965: 93 mm).
Both open their bypass valve in a comparable range: Champ PH820 at 8-8 psi, Donaldson P550965 at 12-17 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.