Wilwood Black Dynalite Rear Parking Brakes — 1958–1964 Oldsmobile/Pontiac Housing Ends, 12.19-inch Plain

The housing-end design, rather than the vehicle badge, identifies this Oldsmobile/Pontiac rear package. 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: 140-7147.
• 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: 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.
• 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

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.

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

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.

Photo note: the laid-out kit photograph shows red calipers. This listing supplies black calipers, as shown in the assembled-brake photograph; the specified rotor surface is plain.

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. 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