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