Bosch 3400 vs NAPA Gold 1625: Oil Filter Compatibility
Compare Bosch 3400 and NAPA Gold 1625 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.
Bosch 3400 and NAPA Gold 1625 specifications
How matching is scored| Specification | Bosch 3400 | NAPA Gold 1625 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 71 mm | 72 mm |
| Gasket ID | 62 mm | 63 mm |
| Can OD | 76 mm | 93.04 mm |
| Height | 102.11 mm | 96.82 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 13 - 19 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 1 mm (Bosch 3400: 71 mm, NAPA Gold 1625: 72 mm).
Gasket ID differs by 1 mm (Bosch 3400: 62 mm, NAPA Gold 1625: 63 mm).
Bosch 3400 is 5.3 mm taller (Bosch 3400: 102.11 mm, NAPA Gold 1625: 96.82 mm) -- check clearance before substituting.
Can OD differs by 17 mm (Bosch 3400: 76 mm, NAPA Gold 1625: 93.04 mm).
Bypass valve presence differs: NAPA Gold 1625 has one, Bosch 3400 does not.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.