Wilwood Rear Black 12.19-Inch SRP/EPB Kit — GM Six-Lug 4x4 (1971–1991), Dynalite Service Brakes

Black Dynalite Internal calipers work with 12.19-inch SRP rotors in this GM rear EPB kit. Separate electric calipers handle stationary parking, replacing a mechanical cable connection at the parking calipers with the supplied control system. Founded in 1977 by Bill Wood and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, selected to work together within a properly matched brake system.

Technical Details

• Manufacturer part number: 140-18159-D
• Rotor specification: Iron, SRP Drilled & Slotted, vented; 12.19 x 0.81 inches
• Caliper specification: 4-piston Forged Dynalite Internal in Black Powder Coat; lug mount
• Included service pad compound: BP-10; Stainless pistons
• Caliper body material: Forged aluminum
• Hydraulic inlet: 1/8-27 NPT
• Rotor/hat wheel-stud clearance pattern(s): 6 x 5.5 in; 6 x 139.7 mm; match the installed hub/axle pattern
• Housing/flange application: K5 Blazer / K10
• Required axle offset: 2.46 in; 62.48 mm
• Parking equipment: separate electric calipers, controller and harness included
• Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
• Wheel clearance: 15-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
• Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

For the listed 1971–1991 GM six-lug 4x4 rear applications, this 12.19-inch FDLI conversion adds electric parking brakes. K-series pickups and Suburbans, Blazer/K5 Blazer and Jimmy each have their own year qualifications. Check the actual housing flange and 2.46-inch offset, particularly if the axle has been changed.

The rear axle must provide the documented 3.55-inch register and 6 x 5.5-inch stud pattern. DS1674 limits flange diameter to 7.05 inches with a 0.050-inch x 45-degree chamfer. Hydraulic hoses/fittings are additional items; allow room for the separate electric calipers and route the supplied parking-brake wiring according to the manual.

Check the complete application table below, including its model-year splits and configuration notes.

The electric parking brake is for stationary parking, not an emergency-stop brake. Applying it while the vehicle is moving can lock the rear wheels and cause a skid. Follow the wiring and holding-test procedures in the manufacturer’s instructions.

Manufacturer Resources

• Exact Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list
• Axle-offset measurement worksheet

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.

Ask PMB Performance to help confirm the configuration before ordering if the vehicle has modified brakes or running gear. We have over 20 years of experience with parts and fitment; a VIN plus the installed component details gives us the best starting point.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None