Large gasket OD variation · Large gasket ID variation
80%
match
COMPATIBLEDonaldson P550318 Oil Filter Cross Reference
Use this page to compare the Donaldson P550318 with potentially compatible oil filters from other brands. Review thread size, gasket dimensions, overall height, and fitment notes before substituting. A cross reference is a research tool, not an automatic guarantee of fitment.
Before substituting: verify filter style, thread size or cartridge dimensions, gasket dimensions, height, clearance, and application-specific requirements.
Best equivalent matches
The searched filter is shown alongside the four strongest alternatives currently in the database. Compare dimensions, thread details, and compatibility notes before deciding whether a substitute may be appropriate.
12 total results
| Specification | Searched filter Donaldson P550318 Reference filter | Fleetguard LF3377Best Match Overall match: 98% SAFE | Overall match: 92% SAFE | Overall match: 88% SAFE | Overall match: 80% COMPATIBLE |
|---|---|---|---|---|---|
| Thread size | 3/4-16 | 3/4-16UNF-2B | 3/4-16 | 3/4-16UNF-2B | 3/4-16 |
| Gasket OD | 72 mm | 71.98 mm 100% | 70.1 mm 79% | 71.98 mm 100% | 72 mm 100% |
| Gasket ID | 62 mm | 62.53 mm 91% | 62.5 mm 92% | 62.53 mm 91% | 62 mm 100% |
| Gasket overlap | Reference | Compared to base 100% | Compared to base 100% | Compared to base 100% | Compared to base 100% |
| Height | 93 mm | 92 mm 100% | 96.82 mm 90% | 107 mm 48% | 93 mm 100% |
| Bypass PSID | Unknown | Unknown Unknown | 15 - 22 Unknown | Unknown Unknown | 20 - 28 Unknown |
| Anti-drainback valve | No | No 100% | No 100% | No 100% | Yes 0% |
| ID top | Unknown | Unknown N/A | Unknown N/A | Unknown N/A | Unknown N/A |
| ID bottom | Unknown | Unknown N/A | Unknown N/A | Unknown N/A | Unknown N/A |
Other suitable matches
Large gasket OD variation · Large gasket ID variation
80%
match
COMPATIBLELarge gasket OD variation · Large gasket ID variation
Large gasket OD variation · Large gasket ID variation
Large gasket OD variation · Large gasket ID variation
Large gasket OD variation · Large gasket ID variation
77%
match
COMPATIBLELarge gasket OD variation · Large gasket ID variation
77%
match
COMPATIBLELarge gasket OD variation · Large gasket ID variation
Related compatible filter pages
Frequently asked questions
What replaces Donaldson P550318?
Several oil filter alternatives may be compatible with Donaldson P550318, but you should always verify thread dimensions, gasket sealing dimensions, bypass behavior, anti-drainback valve requirements, and installation clearance before substituting.
How do I confirm a cross reference for Donaldson P550318?
Compare thread size, thread pitch, gasket outside diameter, gasket inside diameter, can height, bypass pressure range, and anti-drainback valve requirements before using a substitute.
Can I use a different-size oil filter instead of Donaldson P550318?
Sometimes, but only if thread compatibility, gasket seating, bypass behavior, and physical clearance are all acceptable for the application.
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