Wilwood Left Anodized Hi-Torque Electric Parking Brake Caliper for Thin Rotors

The left-hand EPB provides electric parking-brake actuation in an anodized aluminum-and-steel assembly. This thin-rotor version is limited to the published 0.15–0.39-inch thickness envelope. It has no hydraulic port and should be selected as a separate parking function in a brake system with a suitable service caliper. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications; selection depends on the complete brake system.

Technical Details

• Manufacturer part number: 120-18228
• Caliper type: Electric Parking Brake
• Construction: Aluminium / Steel
• Finish: Type III Anodize
• Piston bores: 1.25 inches
• Piston type: Steel
• Mechanically driven piston count: 1
• Dust boots: No
• Nominal rotor width: 0.39 inch
• Rotor thickness limits: 0.15–0.39 inches
• Rotor diameter limits: 11.00–14.00 inches
• Mounting style: Lug
• Mounting side: Left Hand
• Mounting centers: 4.75 inches
• Mount height: 0.36 inch
• Actuation: Hi-Torque electric parking motor; no hydraulic inlet
• Required pad shape: 6407
• Published pad area: 1.7 square inches
• Published pad volume: 0.26 cubic inches
• Manufacturer-listed component weight: 5.0 lb

Fitment & Compatibility

Check the left motor position against the wheel, axle housing and suspension before laying out the bracket. The 4.75-inch centers do not establish rotor offset or pad sweep. Match the exact motor to the approved control electronics and verify wiring protection, switch operation and sufficient clearance through the full range of vehicle movement.

With over 20 years of parts experience, PMB Performance can help compare this component with your existing brake assembly. Include its caliper reference and any conversion-kit information.