Wilwood 14-Inch Drilled Front Brake Conversion with Black AERO6 Calipers for 2001–2006 BMW M3 E46

This Wilwood AERO6 kit is a front disc upgrade for 2001–2006 BMW E46 M3. Six-piston AERO6 calipers, 14-inch Spec-37 rotor rings and application-specific aluminum hats retain the verified factory brake-system interfaces. Wilwood Engineering designs complete disc brake systems as well as calipers, rotors, master cylinders, valves, fittings and brake lines. Established by Bill Wood in 1977 and based in Camarillo, California, it serves motorsport, street-performance and specialized applications; individual parts require a matched system.

Technical Details

• Manufacturer part number: 140-14751-D.
• Match 5 X 4.72 in; 5 X 119.89 mm at the wheel mounting pattern(s) interface, with 0.520 in; 13.21 mm as the nominal hat stud-hole clearance diameter.
• The package excludes wheel hubs. Check the retained hubs against the specified mounting interface.
• Spec-37 Iron forms the vented rotors. Each disc has a srp drilled & slotted face, an outside diameter of 14.00 in; 355.6 mm and thickness of 1.25 in; 31.75 mm.
• Black E-Coat treatment covers the separate aluminum rotor hats.
• Black Powder Coat AERO6 calipers are supplied. Their forged aluminum bodies use the radial mounting arrangement with 6 stainless pistons in each caliper.
• Piston sizes listed by Wilwood are 1.62, 1.12, 1.12 inches, with BP-10 friction material in this kit.
• Hydraulic fitting interface on each caliper: 1/8-27 NPT.
• Published wheel minimum is 18 in; 457.2 mm, subject to the required inside-profile check. Rotor diameter is a separate measurement.
• The kit includes 220-11983 braided hydraulic lines, listed at 18.00 in. Verify the chassis connection on the actual application.
• Application-specific mounting hardware is supplied. Provide or retain the correct spindle, master cylinder and brake booster separately.
• Package quantity is one application-specific brake kit.

Fitment & Compatibility

For the listed 2001–2006 E46 M3, match the original hub, register and factory spindle. DS-1251 requires front dust-shield cutting to clear the larger rotor. This kit does not establish fitment for other E46 models or generations. Models covered: M3. Use the complete application table at the bottom for the precise year, submodel, brake option and note attached to each row.

For fitment assistance, provide PMB Performance with the existing brake configuration and measured mounting/wheel details. Our 20+ years of parts experience support checking the complete assembly rather than relying only on a model name.

Manufacturer Warning

Applicable to the included brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: www.P65Warnings.ca.gov.