Wilwood Front Chevrolet Rotor-Adapter Hub (1949–1954), 5 x 4.75/5.00-Inch Patterns

The dual wheel patterns on this Chevrolet front hub are 5 x 4.75 and 5 x 5.00 inches. Its intermediate rotor plate and spindle bearings must match the documented 1949–1954 brake conversion. Wilwood Engineering designs and builds disc brake systems in Camarillo, California. Bill Wood established the company in 1977; it supplies brake rotors, calipers, master cylinders, valves, fittings and lines for specialized applications, street performance and motorsport. The complete brake system determines which individual components are appropriate.

Technical Details

• Manufacturer part number: 270-11813
• Manufacturer bearing / race references: Inner Bearing: 370-0884; Outer Bearing: 370-0877; Inner Hub Bearing - Race: 370-0883; 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
• 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 4.75, 5 x 5.00 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 = 2.500; H = 2.052; M = 3.700; N = 1.880; P = 3.010; Q = 0.250. Use the manufacturer drawing for the reference faces.

Fitment & Compatibility

Compare the spindle journals, bearing references and hub mounting faces with the complete brake assembly. A shared wheel bolt pattern alone does not establish hub interchangeability.

Wilwood component specifications · Manufacturer reference DS719

With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.