WIX 51366 vs NAPA Gold 7085: Oil Filter Compatibility
Compare WIX 51366 and NAPA Gold 7085 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
Closest known dimensional difference: height +7.9 mm. Verify application-specific requirements before substituting.
- 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 51366 and NAPA Gold 7085 specifications
How matching is scored| Specification | WIX 51366 | NAPA Gold 7085 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 63.25 mm | 63 mm |
| Gasket ID | 51.05 mm | 55 mm |
| Can OD | 82.14 mm | 79 mm |
| Height | 81.13 mm | 89 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 12 - 15 | 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 0.3 mm (WIX 51366: 63.25 mm, NAPA Gold 7085: 63 mm).
Gasket ID differs by 4 mm (WIX 51366: 51.05 mm, NAPA Gold 7085: 55 mm).
NAPA Gold 7085 is 7.9 mm taller (WIX 51366: 81.13 mm, NAPA Gold 7085: 89 mm) -- check clearance before substituting.
Can OD differs by 3.1 mm (WIX 51366: 82.14 mm, NAPA Gold 7085: 79 mm).
Both open their bypass valve in a comparable range: WIX 51366 at 12-15 psi, NAPA Gold 7085 at 8-11 psi -- these ranges do not overlap.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.