WIX 51748MP vs WIX 51748XD: Oil Filter Compatibility
Compare WIX 51748MP and WIX 51748XD 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 21/4-12 thread.
Quick verdict
Bypass present on both, PSI unknown on one or both
- 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 51748MP and WIX 51748XD specifications
How matching is scored| Specification | WIX 51748MP | WIX 51748XD |
|---|---|---|
| Thread size | 21/4-12 | 21/4-12 |
| Gasket OD | 110.8 mm | 112.8 mm |
| Gasket ID | 101.7 mm | 101.7 mm |
| Can OD | 118.6 mm | 118.6 mm |
| Height | 285.19 mm | 288.65 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 13 - 19 | Unknown |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 21/4-12.
Gasket OD differs by 2 mm (WIX 51748MP: 110.8 mm, WIX 51748XD: 112.8 mm).
Gasket ID is identical at 101.7 mm.
WIX 51748XD is 3.5 mm taller (WIX 51748MP: 285.19 mm, WIX 51748XD: 288.65 mm) -- check clearance before substituting.
Can OD is identical at 118.6 mm.
Both include an internal bypass valve.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.