NAPA Gold 7100 vs Baldwin B156: Oil Filter Compatibility
Compare NAPA Gold 7100 and Baldwin B156 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 M22x1.5 thread.
Quick verdict
Both use a M22x1.5 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 7100 and Baldwin B156 specifications
How matching is scored| Specification | NAPA Gold 7100 | Baldwin B156 |
|---|---|---|
| Thread size | M22x1.5 | M22x1.5 |
| Gasket OD | 69 mm | 72 mm |
| Gasket ID | 62 mm | 62 mm |
| Can OD | 93.17 mm | 93.7 mm |
| Height | 97.43 mm | 82.6 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 - 11 | 20 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M22x1.5.
Gasket OD differs by 3 mm (NAPA Gold 7100: 69 mm, Baldwin B156: 72 mm).
Gasket ID is identical at 62 mm.
NAPA Gold 7100 is 14.8 mm taller (NAPA Gold 7100: 97.43 mm, Baldwin B156: 82.6 mm) -- check clearance before substituting.
Can OD differs by 0.5 mm (NAPA Gold 7100: 93.17 mm, Baldwin B156: 93.7 mm).
Both open their bypass valve in a comparable range: NAPA Gold 7100 at 8-11 psi, Baldwin B156 at 20-20 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.