NAPA Gold 1334 vs WIX 51334: Oil Filter Compatibility
Compare NAPA Gold 1334 and WIX 51334 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
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.
NAPA Gold 1334 and WIX 51334 specifications
How matching is scored| Specification | NAPA Gold 1334 | WIX 51334 |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 63 mm | 62.87 mm |
| Gasket ID | 55.1 mm | 55.19 mm |
| Can OD | 80 mm | 80 mm |
| Height | 82.25 mm | 82.25 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 M20x1.5.
Gasket OD differs by 0.1 mm (NAPA Gold 1334: 63 mm, WIX 51334: 62.87 mm).
Gasket ID differs by 0.1 mm (NAPA Gold 1334: 55.1 mm, WIX 51334: 55.19 mm).
Height is identical at 82.25 mm.
Can OD is identical at 80 mm.
Both open their bypass valve in a comparable range: NAPA Gold 1334 at 8-11 psi, WIX 51334 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.