FRAMtoWIX
Direct engineering interchange matrix converting FRAM OEM and aftermarket references to verified WIX replacements. Each mapping includes thread dimensions, gasket seating, and bypass relief PSI tolerances.
Verified Interchange Part Numbers
Direct manufacturer catalog matches and 2-hop verified cross-references.
| FRAM Reference | Filtration Category | WIX Replacement | Tolerance & Specs |
|---|---|---|---|
| CA8755A | Panel Air Filter | 46433 | Compare Specs |
| PH7317 | Spin-on Extra Guard Oil Filter | 51356 | Compare Specs |
| PH7317 | Spin-on Extra Guard Oil Filter | 51348 | Compare Specs |
| PH8A | Spin-on Oil Filter | 51515 | Compare Specs |
5-Point Inspection Protocol: FRAM to WIX
Before mounting a WIX substitute onto a system originally calibrated for FRAM, complete this 5-point physical clearance inspection:
Thread Pitch & Diameter
Confirm pitch type (Metric vs UN/UNF). Never force a metric M20 thread onto a 3/4-16 imperial mounting stud.
Gasket Seating OD
Measure outer gasket diameter. A discrepancy over 3 mm risks oil blowout under high operating oil pressures.
Bypass Valve Setting (PSI/Bar)
Verify relief valve opening pressure. High bypass differentials circulate unfiltered oil prematurely.
Anti-Drainback Valve
Required if the filter canister is mounted horizontally or inverted to prevent dry starts.
Canister Clearance Height
Ensure adequate clearance from vehicle frame rails, steering linkages, or exhaust manifolds.
Frequently Asked Questions: FRAM → WIX
Are FRAM and WIX filters directly interchangeable?
Yes, FRAM parts listed in this cross-reference matrix share identical thread dimensions and operational tolerances with their corresponding WIX replacement numbers. Always verify physical gasket diameter and bypass relief valve pressure prior to installation.
How do I verify the thread size when converting from FRAM to WIX?
Spin-on filters must share identical thread pitch (such as 3/4-16 UNF, M20x1.5, or 1-14 UNS). Check the detailed spec teardown on the filter page to ensure your engine mounting nipple matches the replacement canister.
Does replacing a FRAM filter with WIX void machinery warranty?
Under the US Magnuson-Moss Warranty Act and European block exemption regulations, using a certified OEM-spec aftermarket filter such as WIX that meets or exceeds OEM performance standards does not void vehicle or equipment warranties.
What if the bypass valve PSI differs between FRAM and WIX?
Minor bypass pressure variances of +/- 2 PSI are within normal manufacturing tolerances. If the difference exceeds 5 PSI, verify your engine oil pump pressure profile to prevent premature oil bypass during cold starts.
Search Other FRAM or WIX Parts
Lookup any reference across our entire cross-brand catalog.