NAPA Gold 101000 vs Premium Guard PG4612: Oil Filter Compatibility
Compare NAPA Gold 101000 and Premium Guard PG4612 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 101000 and Premium Guard PG4612 specifications
How matching is scored| Specification | NAPA Gold 101000 | Premium Guard PG4612 |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 62 mm | 62.74 mm |
| Gasket ID | 56 mm | 55.37 mm |
| Can OD | 68.2 mm | 65.53 mm |
| Height | 65.43 mm | 76.45 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 | 17 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are M20x1.5.
Gasket OD differs by 0.7 mm (NAPA Gold 101000: 62 mm, Premium Guard PG4612: 62.74 mm).
Gasket ID differs by 0.6 mm (NAPA Gold 101000: 56 mm, Premium Guard PG4612: 55.37 mm).
Premium Guard PG4612 is 11 mm taller (NAPA Gold 101000: 65.43 mm, Premium Guard PG4612: 76.45 mm) -- check clearance before substituting.
Can OD differs by 2.7 mm (NAPA Gold 101000: 68.2 mm, Premium Guard PG4612: 65.53 mm).
Both open their bypass valve in a comparable range: NAPA Gold 101000 at 8-8 psi, Premium Guard PG4612 at 17-17 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.