NAPA Gold 1037 vs Bosch 3331: Oil Filter Compatibility
Compare NAPA Gold 1037 and Bosch 3331 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 M18x1.5 thread.
Quick verdict
Bypass presence unknown on one or both filters
- 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 1037 and Bosch 3331 specifications
How matching is scored| Specification | NAPA Gold 1037 | Bosch 3331 |
|---|---|---|
| Thread size | M18x1.5 | M18x1.5 |
| Gasket OD | 70.1 mm | 71 mm |
| Gasket ID | 62.5 mm | 62 mm |
| Can OD | 93.73 mm | 75.01 mm |
| Height | 82.55 mm | 85.34 mm |
| Internal bypass valve | Unknown | No |
| Bypass PSID | Unknown | Not applicable |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M18x1.5.
Gasket OD differs by 0.9 mm (NAPA Gold 1037: 70.1 mm, Bosch 3331: 71 mm).
Gasket ID differs by 0.5 mm (NAPA Gold 1037: 62.5 mm, Bosch 3331: 62 mm).
Bosch 3331 is 2.8 mm taller (NAPA Gold 1037: 82.55 mm, Bosch 3331: 85.34 mm) -- check clearance before substituting.
Can OD differs by 18.7 mm (NAPA Gold 1037: 93.73 mm, Bosch 3331: 75.01 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.