Wilwood Black Front Caliper/Drilled-Rotor Conversion with Hubs, Estate Wagon/LeSabre/Skylark/Camaro/Caprice/Impala/Nova/Custom Cruiser/Delta 88/Omega/Bonneville/Catalina/Firebird/Phoenix/Parisienne (1979–1990), 12.19-Inch Rotors

This Wilwood conversion replaces the compatible GM front rotor/hub package with separate hubs, drilled/slotted 12.19-inch rotors and black six-piston Dynapro calipers. The original spindle must be the specified 11-inch-rotor type and must receive the modifications detailed in the installation document. BP-10 pads and the supplied mounting hardware belong to this selected brake arrangement; hydraulic hoses are chosen separately. 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: 140-12836-D
• Type: Forged Dynapro 6 Big Brake Front Brake Kit (Hub).
• Calipers: Dynapro 6; 6-piston; Black Powder Coat.
• Piston bore dimensions: 1.62, 1.38, 1.38 inches; stainless pistons. Caliper mounting: lug.
• Included pad compound: BP-10.
• Rotors: 12.19-inch outside diameter × 0.81-inch width; SRP Drilled & Slotted; Iron; Black Electro Coat surface finish.
• Rotor ventilation: 32 vanes.
• Wheel-mounting change from OE: -0.10 inch per side.
• Replacement hubs: Hub - Vented Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, replacement hubs and bearing hardware.
• Hydraulic flex lines are separate; select the correct fittings, length and route for the vehicle.
• Conditional wheel minimum: 15 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.
• Required spindle preparation: substantial steering-arm/spindle modification includes drilling, tapping and removal of interfering ears. Follow the exact installation drawing; Wilwood recommends a qualified machine shop.
• Conditional wheel support: if the wheel contact face overhangs the new hub, the separately sold 6.60-inch-diameter × 0.20-inch-thick steel support spacer specified in the linked installation instructions is required. Check full seating before assembly. For stamped steel wheels without overhang, Wilwood recommends a separate 6.15-inch-diameter × 0.09-inch-thick hub shield.

Fitment & Compatibility

Identify the spindle itself before using the broad GM vehicle list. Factory drum spindles or a different original rotor size cannot be assumed interchangeable. Establish bearing seating, hub adjustment and bracket alignment according to the instructions, then account for the 0.10-inch inward wheel-position change on each side. The nominal 15-inch wheel reference is conditional on the clearance drawing. Choose hoses with suitable end fittings and enough movement for steering lock and suspension travel, without rubbing the new assembly.

Match the individual year, model, submodel and equipment conditions in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with the vehicle and installed hardware details for help confirming the complete setup.

Manufacturer warning, brake pads only: 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.