Wilwood Rear Drum-to-Disc & Electric Parking Brake Conversion for Chevrolet / GMC C1500 Pickup (1988–1998), Black Dynalite Calipers

Chevrolet and GMC C1500 Pickup rear drums convert to black Dynalite service calipers and electric parking. Match the five-lug axle and 3.25-inch offset. The conversion combines the caliper, pad and rotor configuration specified for this axle and mounting arrangement. Since its founding by Bill Wood in 1977, Wilwood Engineering has designed and manufactured disc brake systems and components. The company is based in Camarillo, California. Calipers, master cylinders, rotors, brake lines, fittings and valves make up a range serving motorsport, street-performance and specialized applications, with each component chosen for the complete system.

Technical Details

• Rotor attachment pattern: 5 x 5 in; 5 x 127 mm; verify the retained hub or axle flange separately
• Hydraulic hose selection: Not included; supply suitable hoses and fittings separately
• Hardware provision: Included; verify the installed fastener engagement
• Not included: spindles, wheel hubs, master cylinder or brake booster
• Electronic parking controls: Controller, switch and wiring harness included; retain the supplied 40-amp fuse in the primary 12V positive circuit
• Parking use: Static holding only; not an emergency stopping brake; retain separate hydraulic service braking
• Manufacturer identification: 140-18043
• Application and supplied quantity: rear conversion kit; Sold as a kit.
• Hydraulic service-caliper specification: Forged Dynalite Internal; 4 pistons per caliper; Black Powder Coat
• Caliper attachment: Lug
• Brake pads supplied: BP-10
• Piston type: Stainless
• Service-caliper port: 1/8-27 NPT
• Rotor assembly specification: 12.19 × 0.81 inches; Iron; Plain Face
• Wheel envelope: 15 in; the complete wheel-clearance drawing determines fit
• Rear housing interface: 88-98 C1500; measured axle offset 3.25 in

Fitment & Compatibility

Applies to the listed 1988–1998 Chevrolet and GMC C1500 Pickup five-lug, two-wheel-drive axle configurations with a measured 3.25-inch offset. The table below distinguishes the early front-brake/chassis options and later five-lug versions; an Iron ProSpindle entry does not replace the rear-axle checks. Compare axle-flange registration, housing ends and wheel clearance before ordering. Electronic parking is independent of the hydraulic service calipers. Install the controller, switch, ground, accessory feed and fused 12V battery supply to DS-1353; this system is for parking, not emergency stops. Suitable hydraulic flexlines are required separately.

Wilwood product specifications · Wilwood installation and compatibility information · Axle measurement worksheet · Wilwood installation and compatibility information

PMB Performance brings over 20 years of parts and fitment experience to component selection. Share the actual housing flange, axle offset, rotor registration and parking or hydraulic arrangement so we can help check the configuration before ordering.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.