Donaldson P550335 vs MANN-FILTER W 920/21: Oil Filter Compatibility
Compare Donaldson P550335 and MANN-FILTER W 920/21 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 3/4-16 thread.
Quick verdict
Both use a 3/4-16 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 P550335 and MANN-FILTER W 920/21 specifications
How matching is scored| Specification | Donaldson P550335 | MANN-FILTER W 920/21 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 70 mm | 71.5 mm |
| Gasket ID | 60 mm | 62.5 mm |
| Can OD | 76 mm | 74.19 mm |
| Height | 86 mm | 86.46 mm |
| Internal bypass valve | No | Unknown |
| Bypass PSID | Not applicable | Unknown |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 1.5 mm (Donaldson P550335: 70 mm, MANN-FILTER W 920/21: 71.5 mm).
Gasket ID differs by 2.5 mm (Donaldson P550335: 60 mm, MANN-FILTER W 920/21: 62.5 mm).
MANN-FILTER W 920/21 is 0.5 mm taller (Donaldson P550335: 86 mm, MANN-FILTER W 920/21: 86.46 mm) -- check clearance before substituting.
Can OD differs by 1.8 mm (Donaldson P550335: 76 mm, MANN-FILTER W 920/21: 74.19 mm).
Anti-drainback valve differs: MANN-FILTER W 920/21 has one, Donaldson P550335 does not.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.