Wilwood Black Right MC4 Mechanical Parking Brake Caliper, Left-Pull Lever / 0.81-Inch Rotor Width

A black MC4 housing and left-hand lever form this right-hand Wilwood parking caliper. Its floating body operates mechanically through a barrel-ended cable, while an offset mounting plate with 2.00-inch hole centers locates the assembly beside the rotor. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.

Technical Details

• Manufacturer part number: 120-17476-BK. Type: MC4 Mechanical caliper.
• Mechanical piston count: 1. Bore: 1.19 inch; piston material: aluminum. Cable applied, with dust boot: yes.
• Rotor dimensions: outside diameter 11.00–14.00 inches; nominal width 0.81 inch, with width limits of 0.70–0.81 inch.
• Attachment geometry: floating caliper on an offset mounting plate mount with 2.00-inch centers; right hand. 1.20-inch mounting height.
• Actuation: parking-brake cable with a 0.310-inch barrel end. Manual wear adjustment and a cable return spring are provided.
• Construction and surface: die-cast aluminum body with a forged aluminum anvil, finished in Black Powder Coat.
• Pad fit uses shape 6407. Match the pad to the rotor and intended operating conditions.
• Assembly: one mechanical parking caliper, supplied with pads, noise-control shields and a steel mounting bracket. The service-brake system is separate.
• Caliper component weight: approximately 3.3 lb.

Fitment & Compatibility

Use the specific offset-plate dimensions when comparing mounting points, rather than the straight 4.75-inch bracket found on other MC4 versions. Verify cable pull, lever clearance and the nominal 0.81-inch rotor-width arrangement together.

Manufacturer warning, brake pads only: Cancer and Reproductive Harm. P65Warnings.ca.gov.

PMB Performance has over 20 years of brake-component experience. Send the existing caliper identification, rotor measurements and mounting details for help comparing this configuration.