WIX 51791XD vs WIX 51791MP: Oil Filter Compatibility
Compare WIX 51791XD and WIX 51791MP 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 11/8-16 thread.
Quick verdict
SAFEMatch score: 97
Both use a 11/8-16 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.
WIX 51791XD and WIX 51791MP specifications
How matching is scored| Specification | WIX 51791XD | WIX 51791MP |
|---|---|---|
| Thread size | 11/8-16 | 11/8-16 |
| Gasket OD | 100.8 mm | 100.8 mm |
| Gasket ID | 91.11 mm | 91.11 mm |
| Can OD | 108.8 mm | 108.8 mm |
| Height | 263.27 mm | 263.27 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 13 - 19 | 13 - 19 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 11/8-16.
Gasket OD is identical at 100.8 mm.
Gasket ID is identical at 91.11 mm.
Height is identical at 263.27 mm.
Can OD is identical at 108.8 mm.
Both open their bypass valve in a comparable range: WIX 51791XD at 13-19 psi, WIX 51791MP at 13-19 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.