WIX 51661 vs NAPA Gold 1356: Oil Filter Compatibility
Compare WIX 51661 and NAPA Gold 1356 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 M20x1.5 thread.
Quick verdict
SAFEMatch score: 92
Both use a M20x1.5 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 51661 and NAPA Gold 1356 specifications
How matching is scored| Specification | WIX 51661 | NAPA Gold 1356 |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 63 mm | 63 mm |
| Gasket ID | 55.1 mm | 55.1 mm |
| Can OD | 68.3 mm | 68.3 mm |
| Height | 86.4 mm | 86.41 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 13 - 19 | 12 - 15 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M20x1.5.
Gasket OD is identical at 63 mm.
Gasket ID is identical at 55.1 mm.
Height is identical at 86.4 mm.
Can OD is identical at 68.3 mm.
Both open their bypass valve in a comparable range: WIX 51661 at 13-19 psi, NAPA Gold 1356 at 12-15 psi.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.