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Product details
SRP discs and black calipers form the parking-brake-equipped Mopar/Dana combination. The supplied black powder-coated 4-piston calipers and 12.19-inch SRP drilled-and-slotted rotors are configured for Mopar 8-3/4 / Dana 60, snap-ring bearings. Wilwood Engineering began in 1977 under founder Bill Wood and is based in Camarillo, California. The company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized vehicles. Calipers, rotors, master cylinders, valves, fittings and brake lines must be selected around the needs of the complete system.
Fitment & Compatibility
Select this rear package for Mopar 8-3/4-inch or Dana 60 ends with the specified non-adjustable snap-ring bearings and a 2.36-inch axle offset. The bearing requirement is essential; a differential name is not a substitute for checking axle retention. Use DS424 to compare the end, bearing and bracket stack before ordering. No vehicle-model fitment is implied for every axle carrying these differential names. Unlike a rear-disc package without a parking mechanism, this kit incorporates drum sections and internal mechanical shoes for that function. A cable installation must still be planned and checked for full release as well as holding operation. Hydraulic hose routing, wheel clearance and compatibility with the vehicle’s master cylinder remain part of the complete brake conversion.
Check the actual wheel against the manufacturer template, including the inner barrel and back of the spokes. A nominal wheel diameter by itself does not guarantee clearance.
Technical Details
- Manufacturer part number: 140-7144-D.
- 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.
- Rotor dimensions: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick.
- Rotor construction: Iron; vented; SRP Drilled & Slotted friction surface.
- 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.
- Housing/flange arrangement: Mopar/Dana.
- Axle flange offset: 2.36 in; 59.94 mm.
- Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
Package and installation requirements
- The one-piece iron drum/rotors incorporate the parking-brake drums; the internal shoes provide a mechanical parking brake independently of the four-piston service calipers.
- Parking-brake cables and hydraulic brake lines are separate. Wilwood references universal cable kit 330-9371; installation can require cable or vehicle modifications.
- Use the non-adjustable snap-ring bearing arrangement specified by Wilwood; confirm the bearing before ordering.
Manufacturer references
With over 20 years of experience, PMB Performance can help you work through the mounting and brake-system details before ordering. Include your vehicle information and any axle, hub or spindle changes when contacting us.
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.
