WIX 51516MP vs Mazda AJ04-14-302A: Oil Filter Compatibility
Compare WIX 51516MP and Mazda AJ04-14-302A 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.
WIX 51516MP and Mazda AJ04-14-302A specifications
How matching is scored| Specification | WIX 51516MP | Mazda AJ04-14-302A |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 69.44 mm | 72 mm |
| Gasket ID | 61.72 mm | 63 mm |
| Can OD | 74.19 mm | 93.19 mm |
| Height | 122.6 mm | 110.19 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 - 11 | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 2.6 mm (WIX 51516MP: 69.44 mm, Mazda AJ04-14-302A: 72 mm).
Gasket ID differs by 1.3 mm (WIX 51516MP: 61.72 mm, Mazda AJ04-14-302A: 63 mm).
WIX 51516MP is 12.4 mm taller (WIX 51516MP: 122.6 mm, Mazda AJ04-14-302A: 110.19 mm) -- check clearance before substituting.
Can OD differs by 19 mm (WIX 51516MP: 74.19 mm, Mazda AJ04-14-302A: 93.19 mm).
Both open their bypass valve in a comparable range: WIX 51516MP at 8-11 psi, Mazda AJ04-14-302A at 8-11 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.