Wilwood Front Vented-Rotor Hub for Chevrolet (1955–1957), Adapter Mount

A separate adapter plate connects the vented rotor to this 1955–1957 Chevrolet front hub. Wilwood's product page and dimensional guide differ on the H reference, so the supplied hub geometry needs confirmation. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.

Technical Details

• Manufacturer part number: 270-11032
• Related assembly part reference(s): 300-3307; 300-3099; check the kit contents and obtain any separately required parts
• Conflicting published dimensions: Dim H: product page 1.626 inch, DS719 1.530 inch. Confirm the supplied hub and reference faces before using either value.
• 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 = 1.150; D = 2.495; H = 1.626; M = 3.020; N = 1.830; P = 3.180; Q = 0.380. 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.

Fitment & Compatibility

Check wheel-flange position against the spindle and rotor mounting faces. Hubs for the same vehicle can use different offsets or bearing combinations and should not be substituted on model name alone.

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.