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Product details
Wilwood's E46 rear parking hat uses a 7.28-inch shoe bore and 1.200-inch offset. Match the 2.97-inch register and the complete conversion package. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and builds disc brake systems for motorsport, street-performance and specialized uses, including calipers, rotors, master cylinders, valves, fittings and brake lines. Each part must match the requirements of the whole braking arrangement.
Technical Details
- Manufacturer part number: 170-14758
- Rotor mounting hole/thread designation: 1/4-20
- Parking-shoe bore: 7.28 inches
- Internal clearance diameter: 6.90 inches
- Mounting-face thickness: 0.28 inches
- Hub-side hole clearance diameter(s): 0.610 inches; these are clearance dimensions, not wheel-stud thread sizes
- Manufacturer-listed attachment hardware reference: 230-8008; verify the specific rotor and attachment arrangement before ordering hardware
- Component: Parking-Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Rear
- Hat offset: 1.200 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: 2.97 inches
Fitment & Compatibility
For BMW E46 brake conversions, compare the replacement with the actual hat and complete brake-kit instructions. A matching flange pattern alone does not establish rotor alignment or caliper clearance. The parking-shoe diameter, anchor arrangement and complete drum-in-hat mechanism must match. A bare hat is not a complete parking-brake assembly.
Manufacturer Reference
Wilwood component specifications and dimensions
With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.
