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Product details
The front hub for this Impala conversion uses A6/A2 bearings and an intermediate vented-rotor plate. Confirm the original drum-spindle configuration and the full brake-kit arrangement before replacing the hub. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.
Technical Details
- Manufacturer part number: 270-12024
- Package: One hub; the compatible rotor, rotor adapter or hat and its attachment hardware are selected for the complete conversion
- Hub closure and races: Manufacturer describes included bearing races and screw-on aluminum cap; confirm the supplied assembly and obtain the compatible bearings separately
- Component: Hub - Vented Rotor Offset
- Position in the specified assembly: Front
- Material: Aluminum
- Finish: Bare
- Wheel mounting pattern(s): 5 x 4.50, 5 x 4.75 inches; separate from rotor or drive-flange attachment
- Wheel-stud thread: 1/2-20
- Rotor mounting arrangement: Adapter
- Rotor interface: 5 x 3.88; this is not the wheel bolt circle
- Compatible rotor-adapter output interface(s): 6 x 6.25, 8 x 7.00; match the actual adapter and rotor
- Product-page drawing references (inches): A = 1.130; D = 2.495; H = 1.670; M = 3.150; N = 1.740; P = 3.000; Q = 0.250. Use the manufacturer drawing for the reference faces.
- Manufacturer bearing / race references: Inner Bearing: 370-0879; Outer Bearing: 370-0877; Inner Hub Bearing - Race: 370-0878; Outer Hub Bearing - Race: 370-0876. References identify compatible service parts and do not mean all bearings are included.
- Related assembly part reference(s): 300-3307; 300-3099; check the kit contents and obtain any separately required parts
Fitment & Compatibility
Match the documented hub configuration to the installed spindle. Select the corresponding bearings and rotor hardware separately where they are not included; confirm the wheel and caliper clearance.
Wilwood component specifications · Manufacturer reference DS719
PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.
