Wilwood 12.19-inch SRP Rear Kit for 1958–1964 Olds/Pontiac Ends — Black Calipers with Parking Brake

Black calipers and patterned discs mount through brackets for the 1958–1964 housing-end arrangement. The supplied black powder-coated 4-piston calipers and 12.19-inch SRP drilled-and-slotted rotors are configured for 1958–1964 Oldsmobile / Pontiac housing ends. 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

The 1958–1964 date range describes the Oldsmobile/Pontiac housing-end design used by this kit. It does not restrict every possible installation to those vehicle years, nor does it establish direct fitment to all later GM cars in the application list. Those modified vehicles still need the correct rear end with a measured 2.81-inch axle offset. Compare the flange shape and bracket locations with DS427 before choosing the package. An internal drum and shoe assembly supplies the parking function separately from the Dynalite service caliper. Allow for cable adaptation and hydraulic hose selection during the conversion. If the car has a replacement rear axle, identify that assembly first; the vehicle identification number alone cannot confirm the housing end fitted to a modified car.

Use the complete vehicle row and its application notes below to check model year, trim and original brake equipment.

Technical Details

• Manufacturer part number: 140-7147-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: Olds/Pontiac.
• Axle flange offset: 2.81 in; 71.37 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.

Manufacturer references

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

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.

Vehicle Applications

Application Notes

1. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
2. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
3. Universal Parking Brake cable kit, may require modifications to cable or vehicle to install.
4. Line kit included (manufacturer): None