NAPA Gold 1036 vs FRAM PH3980: Oil Filter Compatibility
Compare NAPA Gold 1036 and FRAM PH3980 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 · ADBV 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 1036 and FRAM PH3980 specifications
How matching is scored| Specification | NAPA Gold 1036 | FRAM PH3980 |
|---|---|---|
| Thread size | M18x1.5 | M18X1,5 |
| Gasket OD | 69.4 mm | 71.1 mm |
| Gasket ID | 61.7 mm | 62.5 mm |
| Can OD | 74.19 mm | 75.79 mm |
| Height | 122.6 mm | 125.43 mm |
| Internal bypass valve | Unknown | No |
| Bypass PSID | Unknown | Not applicable |
| Anti-drainback valve | Unknown | Yes |
What matters in this specific comparison
Thread size matches: both are M18x1.5.
Gasket OD differs by 1.7 mm (NAPA Gold 1036: 69.4 mm, FRAM PH3980: 71.1 mm).
Gasket ID differs by 0.8 mm (NAPA Gold 1036: 61.7 mm, FRAM PH3980: 62.5 mm).
FRAM PH3980 is 2.8 mm taller (NAPA Gold 1036: 122.6 mm, FRAM PH3980: 125.43 mm) -- check clearance before substituting.
Can OD differs by 1.6 mm (NAPA Gold 1036: 74.19 mm, FRAM PH3980: 75.79 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.