FRAM HPH8094 vs WIX 57521: Oil Filter Compatibility
Compare FRAM HPH8094 and WIX 57521 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 11/2-12 thread.
Quick verdict
Candidate adds internal bypass; usually redundant with engine-mounted bypass
- 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.
FRAM HPH8094 and WIX 57521 specifications
How matching is scored| Specification | FRAM HPH8094 | WIX 57521 |
|---|---|---|
| Thread size | 11/2-12 | 11/2-12 |
| Gasket OD | 111 mm | 109.7 mm |
| Gasket ID | 98 mm | 96.52 mm |
| Can OD | 118 mm | 118.6 mm |
| Height | 180 mm | 128 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 8 - 11 |
| Anti-drainback valve | Yes | Yes |
What matters in this specific comparison
Thread size matches: both are 11/2-12.
Gasket OD differs by 1.3 mm (FRAM HPH8094: 111 mm, WIX 57521: 109.7 mm).
Gasket ID differs by 1.5 mm (FRAM HPH8094: 98 mm, WIX 57521: 96.52 mm).
FRAM HPH8094 is 52 mm taller (FRAM HPH8094: 180 mm, WIX 57521: 128 mm) -- check clearance before substituting.
Can OD differs by 0.6 mm (FRAM HPH8094: 118 mm, WIX 57521: 118.6 mm).
Bypass valve presence differs: WIX 57521 has one, FRAM HPH8094 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.