Wilwood Front Four-Lug Mustang Rotor-Adapter Hub, Six-Cylinder Conversion

The four-lug flange and six-cylinder spindle arrangement distinguish this Mustang front hub. A separate rotor adapter is required, and conflicting year and M/N references should be resolved against the supplied assembly. 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: 270-12537
• Compatible rotor-adapter output interface(s): 6 x 6.25; match the actual adapter and rotor
• Product-page drawing references (inches): A = 1.720; D = 2.500; H = 1.052; M = 2.790; N = 2.230; P = 2.840; Q = 0.250. Use the manufacturer drawing for the reference faces.
• Manufacturer bearing / race references: Inner Bearing: 370-3147; Outer Bearing: 370-1239; Inner Hub Bearing - Race: 370-3146; Outer Hub Bearing - Race: 370-1238. References identify compatible service parts and do not mean all bearings are included.
• Related assembly part reference(s): 170-12538; check the kit contents and obtain any separately required parts
• Conflicting published dimensions: Dim M: product page 2.790 inch, DS719 3.57 inch; Dim N: product page 2.230 inch, DS719 1.71 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): 4 x 4.50 inches; separate from rotor or drive-flange attachment
• Wheel-stud thread: 1/2-20
• Rotor mounting arrangement: Adapter
• Rotor interface: 5 x 3.345; this is not the wheel bolt circle

Fitment & Compatibility

Select the replacement around the existing spindle, bearing and rotor assembly. The vehicle application describes a brake conversion and does not establish an original-equipment hub replacement. Product characteristics start in 1965; narrative and DS719 begin in 1964. Confirm the six-cylinder spindle and model-year scope. Confirm the exact spindle application with Wilwood. The representative manufacturer photograph shows a hub with multiple wheel-stud patterns. This part is listed with a single 4 x 4.50-inch wheel pattern; confirm the required flange against the product specification.

Wilwood component specifications · Manufacturer reference DS719

PMB Performance has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.