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Product details
The manufacturer, Wilwood Engineering, began under Bill Wood in 1977 and operates from Camarillo, California. It designs and manufactures disc brake systems and components: calipers, brake rotors, master cylinders, valves, fittings and lines for motorsport, street and specialized vehicles. Four replacement pads for the specified Wilwood caliper configuration. The complete braking arrangement determines which individual components are appropriate.
This part is selected by its SC-series or other specifically listed mechanical/parking-caliper interface. The current page identifies CM material; Wilwood’s parts-search text calls it SM. These inconsistent material labels and .27/.120-inch thickness descriptions require confirmation before making a substitution.
Technical Details
- Manufacturer part number: 150-7644K
- Pad/shoe profile: 6407
- Published thickness: 0.27 inch on the product page and drawing; 0.120 inch in the ordering description. Wilwood must confirm the supplied dimension.
- Catalog pad area: 1.7 square inches
- Catalog pad volume: 0.26 cubic inches
- Supplied condition: Not pre-bedded; follow the instructions for the selected compound and brake system.
- Listed Wilwood calipers: Electronic Parking Brake; HE1 Hydra-Electric Caliper; HM Hydra-Mechanical; MC2 / MC3; MC4 Mechanical; MC5 Mechanical; SC1 / SC2 / SC3
- Package quantity: 4 individual pads
- Published material labels: CM on the exact-pad page; SM in Wilwood’s ordering description. Confirm the supplied friction material and intended duty.
Fitment & Compatibility
Match the exact caliper in the compatible list and verify pad clearance. Wilwood’s drawing and product page show .27-inch thickness, while its parts-search description states .120 inch and SM material. The exact page labels CM; confirm material and thickness interpretation for the installed mechanism.
Use in a parking mechanism must follow that mechanism’s instructions. The general CM compound chart does not establish dynamic service-brake or street approval for a mechanical parking-caliper installation.
Manufacturer Reference
Wilwood pad dimensions, compound and caliper information
PMB Performance brings over 20 years of parts and fitment experience. Contact our team with the caliper details and rotor specification to confirm the right pad.
WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.
