Description
20424 – .045" CALIPER SHIM
PART NUMBER(S):
Fleet Products: 20424 (New) | OE: Ride Air RAD20424
DESCRIPTION:
Model: Caliper Shim (.045" thickness)
Vehicles: General use with hydraulic brake calipers on heavy-duty trucks, trailers, and bus disc brake systems
• Thickness: 0.045"
• Product Type: Hydraulic caliper shim used to restore caliper-to-support clearance
• Material: Precision shim stock for accurate fitment
• Application: Provides correction of excessive clearance between caliper support rails and caliper body
• Typically paired with heavy-duty disc brake pad kits for service alignment
• Application: Commonly paired with CD225 disc brake pad kits Bendix 2.60” & 2.88”
Applications:
Is this shim the right fit for your brake service✔ Yes—this 0.045" caliper shim is designed to correct caliper-to-support rail clearance when the measured gap exceeds .035". It restores alignment, helps prevent brake drag, and ensures even pad wear across the braking surface in heavy-duty fleet service.
CROSS-REFERENCE(S):
20424, RAD20424
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm shim thickness and application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Measure caliper-to-support rail clearance with feeler gauges before shim selection.
✔ Install shim to return clearance to within OEM-specified limits (generally ≤ .035").
✔ Use only the required number of shims to correct fit—do not stack excessively.
✔ Do not allow the caliper to hang unsupported by brake hoses during service.
✔ Verify rotor-to-pad alignment after shim installation.
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Warranty Information
