Hat No: 170-13872

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Parking Brake Hat - Truck
Prod #: 170-13872
Price: $254.93
Parking Brake Hat - Truck 170-13872

Hat Dimensions
Mount Hole Type Threaded
Rotor Bolt Circle (in) 12 x 10.25
Hat Offset (in) 2.92
Center Reg. (in) 5.01
Hat Type
Material Iron
Mount Style Fixed Mount
Finish Black E-Coat
Weight (lbs) 17.305
Bolt Circle Dimensions
Hat Bolt Circle 1 8 x 7.09
Hat Bolt Circle 2
Hat Bolt Circle 3
UPC Number
UPC 889545072518
Application Info
Application Note GM 2500 Truck 2011-15
Hat Bolt Kit Part #
Application Note
Application Note
Parking Brake Hat - Truck - Product Description

These premium grade cast iron hats make it possible to use bolt-on rotors on vehicles equipped with OEM internal shoe parking brake assemblies. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance. Used for big rotor brake kits on truck, SUV, and 4WD axles with either 6 or 8 lug configurations.





Rotor Hat Dimensions

Additional Hat Dimensions
Rotor Mount Hole Size (in) 5/16-18
Shoe I.D. (in) 8.94
Clearance I.D. (in) 8.7
Face Thickness (in) 0.39
Hat Stud Diamenter - BC 1 (in) 0.64
Hat Stud Diamenter - BC 2 (in)
Hat Stud Diamenter - BC 3 (in)
Additional Notes

Wilwood Compatible Rotors

GT 60 Curved Vane Rotor

Rotor Dimensions
Rotor Diameter Range 15.5
Rotor Width Range 1.38

GT 60 Curved Vane Rotor Rotors

Wilwood's GT & GTB 60 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. GTB rotor have additional black e-coat finish applied for applications where corrosion resistance is concern. GT 60 Curved Vane rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition. View GT Rotors
GT 60 Curved Vane Rotor

Rotor Dimensions
Rotor Diameter Range 15.5
Rotor Width Range 1.38

GT 60 Curved Vane Rotor Rotors

Wilwood's GT & GTB 60 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. GTB rotor have additional black e-coat finish applied for applications where corrosion resistance is concern. GT 60 Curved Vane rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition. View GT Rotors
GT 60 Curved Vane Rotor

Rotor Dimensions
Rotor Diameter Range 15
Rotor Width Range 1.25

GT 60 Curved Vane Rotor Rotors

Wilwood's GT 60 Curved Vane Spec-37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Combined with our proven GT Series asymmetrical face slot pattern and individual dynamic balancing, you are assured the smoothest, vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition. View GT Rotors



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