Wilwood 2.36-inch New-Style Big Ford Rear Parking Kit — Black Calipers with Plain 12.19-inch Rotors

The 2.36-inch offset identifies this new-style Ford kit and separates it from the 2.50-inch version. This Forged Dynalite rear disc and parking-brake kit combines black powder-coated 4-piston calipers and 12.19-inch plain-face rotors. Founded in 1977 by Bill Wood and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, selected to work together as a complete brake system.

Technical Details

• Manufacturer part number: 140-7582.
• Rotor dimensions: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick.
• Rotor construction: Iron; vented; Plain Face friction surface.
• Calipers: 4 pistons; forged aluminum; stainless steel pistons.
• Caliper attachment: lug mount; 1/8-27 NPT hydraulic inlet.
• Caliper finish: Black Powder Coat.
• Rotor/hat wheel-stud clearance patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm.
• Rotor/hat stud-hole clearance diameters: 0.52 in; 13.21 mm. These are hole sizes, not wheel-stud thread specifications.
• The rotor/hat drilling does not change the vehicle hub or axle wheel bolt pattern.
• Housing/flange arrangement: Big Ford New Style.
• Axle flange offset: 2.36 in; 59.94 mm.
• Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
• Sold as one kit. Mounting hardware is included. Hubs are not included.
• Brake pads are included; use the compound and installation instructions specified for this rotor package.
• Spindles, master cylinder, brake booster and hydraulic brake lines are not included.

Fitment & Compatibility

Although this package uses the Big Ford new-style/Torino flange, its required axle offset is 2.36 inches. That dimension differentiates it from the commonly encountered 2.50-inch version with a similar housing-end description. Check the actual shaft and housing combination against DS498 and the offset worksheet rather than inferring the offset from the flange name. The 1990 Lincoln Town Car row below does not override those measurements. The one-piece drum/rotor houses an internal parking-brake shoe assembly, while the four-piston caliper operates the service brake. Before fitting the system, establish how the parking cables will attach and release, select the hydraulic lines, and check the complete wheel profile. The nominal 15-inch wheel guide is not a promise that every 15-inch wheel clears.

The application table below identifies the model-year and factory-equipment combinations. Match the entire row, including its numbered notes.

Package and installation requirements

• Mechanical parking is provided by shoes within the rotor’s integral drum. The 12.19-inch disc surfaces are operated by the service calipers, so cable adjustment does not replace hydraulic brake setup.
• This kit supplies no parking cable or flexline set. Wilwood identifies universal cable kit 330-9371; confirm the required routing and any installation modifications.

Manufacturer references

• Wilwood product and configuration information
• Installation instructions
• Technical bulletin

PMB Performance brings more than 20 years of brake and parts experience to fitment questions. Send us the axle or spindle details, current brake equipment and intended wheel dimensions if you need help checking this kit.

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.

Vehicle Applications

Application Notes

1. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
2. Line kit included (manufacturer): None