Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This C1500 rear conversion uses 14-inch SRP drilled-and-slotted rotors with black, radial-mount FNSL4R calipers. The rotor and caliper package needs wheel-template clearance, while the electric parking brake requires a suitable power supply and the supplied harness. Based in Camarillo, California, Wilwood Engineering has designed and manufactured disc brake systems and components since Bill Wood founded the company in 1977. Its work spans motorsport, street-performance and specialized applications, with a product range covering master cylinders, calipers, brake rotors, valves, fittings and brake lines. These parts must be chosen for the requirements of the entire brake system.
Technical Details
- Manufacturer part number: 140-18045-D
- Rotor specification: Spec-37 Iron, SRP Drilled & Slotted, vented; 14.00 x 1.10 inches
- Caliper specification: 4-piston Forged Narrow Superlite 4R in Black Powder Coat; radial 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): 5 x 5 in; 5 x 127 mm; match the installed hub/axle pattern
- Housing/flange application: 88-98 C1500
- Required axle offset: 3.25 in; 82.55 mm
- Parking equipment: separate electric calipers, controller and harness included
- Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
- Wheel clearance: 18-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
The 1988–1998 Chevrolet/GMC C1500 applications below have configuration-specific limits, including five-lug 4x2 trucks and vehicles using Wilwood Iron ProSpindles. Verify the rear flange, 3.25-inch axle offset and 5 x 5-inch pattern; a year/model match alone is insufficient.
The 14-inch brake package requires a wheel-template check even where an 18-inch wheel is used. Axle preparation must meet the 6.61-inch maximum flange diameter, 0.050-inch x 45-degree chamfer and 3.09-inch register shown in the instructions.
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.
With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.
Vehicle Applications
| Years | Make | Model | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|
| 1988-1991 | Chevrolet | C1500 Pickup | 4 x 2 w/ 1.00" Wide Front Rotor | Disc | Drum | Rear Kit | 1 |
| 1988-1991 | Chevrolet | C1500 Pickup | 5 Lug - 4 x 2, w/ 1.25" wide rotor, HD Chassis (F44) | Disc | Drum | Rear Kit | 1 |
| 1988-1998 | Chevrolet | C1500 Pickup | Vehicles using Wilwood Iron ProSpindles | Drop | Drum | Rear Kit | 1 |
| 1988-1991 | GMC | C1500 Pickup | 4 x 2 w/ 1.00" Wide Front Rotor | Disc | Drum | Rear Kit | 1 |
| 1988-1991 | GMC | C1500 Pickup | 5 Lug - 4 x 2, w/ 1.25" wide rotor, HD Chassis (F44) | Disc | Drum | Rear Kit | 1 |
| 1988-1998 | GMC | C1500 Pickup | Vehicles using Wilwood Iron ProSpindles | Drop | Drum | Rear Kit | 1 |
| 1992-1998 | Chevrolet | C1500 Pickup | 5 Lug - 4 x 2 | Disc | Drum | Rear Kit | 1 |
| 1992-1998 | GMC | C1500 Pickup | 5 Lug - 4 x 2 | Disc | Drum | Rear Kit | 1 |
Application Notes
- Line kit included (manufacturer): None
