MAHLE OC 306 vs NAPA Gold 7035: Oil Filter Compatibility
Compare MAHLE OC 306 and NAPA Gold 7035 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
Large bypass PSI mismatch: 26.5 psi
- 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.
MAHLE OC 306 and NAPA Gold 7035 specifications
How matching is scored| Specification | MAHLE OC 306 | NAPA Gold 7035 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 72 mm | 72 mm |
| Gasket ID | 62 mm | 63 mm |
| Can OD | 76 mm | 74.24 mm |
| Height | 55 mm | 58.55 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 36 | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD is identical at 72 mm.
Gasket ID differs by 1 mm (MAHLE OC 306: 62 mm, NAPA Gold 7035: 63 mm).
NAPA Gold 7035 is 3.5 mm taller (MAHLE OC 306: 55 mm, NAPA Gold 7035: 58.55 mm) -- check clearance before substituting.
Can OD differs by 1.8 mm (MAHLE OC 306: 76 mm, NAPA Gold 7035: 74.24 mm).
Both open their bypass valve in a comparable range: MAHLE OC 306 at 36-36 psi, NAPA Gold 7035 at 8-11 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.