Fitment questions?
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Product details
A 0.850-inch offset distinguishes this Wilwood BMW E46 front hat. Confirm its 3.12-inch register, five-hole flange and twelve-bolt rotor. Founded in 1977 under Bill Wood, Wilwood Engineering operates from Camarillo, California. The company designs and manufactures disc braking systems and components, including calipers, master cylinders, brake rotors, fittings, valves and brake lines. Its motorsport, specialized and street-performance range requires individual parts matched to the complete braking arrangement.
Technical Details
- Manufacturer part number: 170-14757
- Component: Short-Offset Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Front
- Hat offset: 0.850 inch
- Rotor attachment interface: 12 x 8.75 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): 5 X 4.72 inches; verify the actual hub and wheel-stud clearance
- Center register diameter: 3.12 inches
- Rotor mounting hole/thread designation: 1/4-20
- Internal clearance diameter: 8.01 inches
- Mounting-face thickness: 0.25 inches
- Hub-side hole clearance diameter(s): 0.520 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-4572; verify the specific rotor and attachment arrangement before ordering hardware
Fitment & Compatibility
This is a component for BMW E46 brake conversions, not a complete brake kit. Check the hub location, rotor mounting surface and caliper alignment as a system before ordering. Select the rotor and attachment hardware separately for the documented assembly. Follow the installation drawing for engagement and clearance at every mounting point.
Manufacturer Reference
Wilwood component specifications and dimensions
PMB Performance has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.
