FleetguardtoWIX
Direct engineering interchange matrix converting Fleetguard 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.
| Fleetguard Reference | Filtration Category | WIX Replacement | Tolerance & Specs |
|---|---|---|---|
| FS19596 | Fuel Filter / Water Separator | 33608 | Compare Specs |
| HF6510 | Spin-on Hydraulic Return Filter | 51452 | Compare Specs |
| LF16015 | Heavy Duty Lube Filter | 57620 | Compare Specs |
5-Point Inspection Protocol: Fleetguard to WIX
Before mounting a WIX substitute onto a system originally calibrated for Fleetguard, 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: Fleetguard → WIX
Are Fleetguard and WIX filters directly interchangeable?
Yes, Fleetguard 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 Fleetguard 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 Fleetguard 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 Fleetguard 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 Fleetguard or WIX Parts
Lookup any reference across our entire cross-brand catalog.