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Product details
The rotor and bracket determine whether this clear-anodized Wilwood HE1 left hydraulic and electric parking caliper is the correct choice. Its 0.39-inch rotor-width configuration works with the floating mount and 1-piston layout detailed below. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. Its disc brake design and manufacturing work includes master cylinders, valves, fittings and brake lines as well as rotors and calipers. The company serves motorsport, street-performance and specialized applications in which the entire brake system determines component choice. The HE1 Hydra-Electric sliding caliper combines hydraulic actuation with an electric parking mechanism. Its single hydraulic piston, 1/8-27 NPT inlet and motor distinguish it from an electric-only EPB caliper. Both the hydraulic circuit and separate parking controls must be configured for the vehicle.
Technical Details
- Manufacturer part number: 120-17081
- Component: HE1 Hydra-Electric; one individual caliper
- Placement: Left
- Construction and finish: Cast aluminum; Clear Anodize
- Mounting interface: Floating; mounting centers 4.75 inches
- Mounting-hole diameter: 0.39 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Pistons: 1; stainless steel; bore dimensions 1.25 inches
- Hydraulic piston area: 1.23 square inches
- Dust boots: Yes
- Brake pad shape: 6407; shape number does not specify a friction compound
- Nominal rotor width: 0.39 inches
- Rotor width range: 0.15–0.39 inches
- Rotor diameter range: 11.00–14.00 inches
- Caliper weight reference: 4.7 lb
One Hydra-Electric caliper. The rotor, hydraulic flexline, parking controller, switch, wiring and vehicle-specific mounting adapters are separate components.
Fitment & Compatibility
Confirm the 4.75-inch floating mount, the hydraulic line connection and clearance around the electric motor. The hydraulic service circuit and the parking controller are separate systems and both require a compatible installation. Controller, switch and wiring are not included as a complete kit.
Wilwood caliper specifications
For a modified brake system, provide its existing component specifications along with the vehicle details. PMB Performance has over 20 years of parts and fitment experience to help check the assembly before purchase.
