Wilwood Front Drilled/Slotted 14-Inch Conversion, BMW 330i/330Ci/325i/325Ci/320i/328Ci/323Ci/328is/328i/323is/323i (1999–2006), Black Calipers

This Wilwood BMW front conversion selects black AERO6 calipers, drilled/slotted SRP rings and BP-10 pads. Its 14-inch rotors are 1.25 inches wide and mount on separate hats, retaining the original front hubs. The matched six-piston hardware is intended for the E46 configuration described in the installation instructions. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines. Its product range serves motorsport, street-performance, and specialized applications, with individual components selected to match the requirements of the complete brake system.

Technical Details

• Manufacturer part number: 140-11974-D
• Type: AERO6 Big Brake Front Brake Kit
• Calipers: AERO6; 6 pistons per caliper; Black Powder Coat; radial mounting.
• Piston bores: 1.62, 1.12, 1.12 inches; Stainless pistons. Included pad compound: BP-10.
• Rotors: 14.00-inch diameter × 1.25-inch width; SRP Drilled & Slotted; Spec-37 Iron; Black Electro Coat finish.
• Wheel bolt circles: 5 x 4.72 inches.
• Included: paired calipers, pads, rotors, brackets and assembly hardware, rotor hats.
• Hydraulic flex lines are separate. Master cylinder, booster and spindles are not included; retain or select suitable matching components.
• Conditional minimum wheel diameter: 18 inches. Verify the complete clearance drawing for barrel and spoke offset before purchase.

Fitment & Compatibility

Compare the BMW production year, body and drivetrain to DS826, not just the model name. The 1999 sedan-only split and later coupe/convertible coverage require particular attention. The 323is/328is and M-labeled rows need confirmation of the actual chassis; no E36 or M3 compatibility should be inferred. Use an 18-inch or larger wheel only after checking spoke and barrel clearance against the drawing. Flexible lines are separate and must match both the car and caliper fittings.

Check the individual year, model, submodel and equipment conditions in the fitment table below before ordering.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle, axle or spindle details and wheel measurements for fitment help.

California Proposition 65 warning, brake pads only: WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.