Fitment questions?
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Product details
The 7.09-inch radial pattern identifies the attachment layout of this Wilwood AERO4 Dust Seal. This black caliper has 4 pistons, 1.12-inch bores and a 0.81-inch nominal rotor-width specification. Wilwood Engineering’s disc brake range includes calipers, rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977 in California; it is based in Camarillo and serves motorsport, street-performance and specialized brake applications.
AERO4-DS calipers use four stainless pistons with external dust wipers and a 7.09-inch radial mounting pattern. Internal fluid transfer avoids an external crossover tube, leaving rotor centering and wheel clearance to the installation design.
Technical Details
- Manufacturer part number: 120-14441-BK
- Component: Wilwood AERO4 Dust Seal; one caliper
- Piston arrangement: 4 pistons; 1.12-inch bores; stainless steel
- Hydraulic piston area: 1.98 square inches, as specified by Wilwood
- Pad shape: Wilwood type 6617; compound selected separately
- Mounting: universal side configuration; Radial; 7.09-inch centers; 0.45-inch mounting holes
- Mount height: 2.09 inches
- Rotor width: 0.81-inch nominal; 0.75–0.81-inch permitted range
- Rotor diameter range: 12.19–15.00 inches
- Fluid inlet: 1/8-27 NPT
- Dust boots: Yes
- Body and finish: Forged aluminum; Black Powder Coat
Fitment & Compatibility
The bracket must center the caliper over the rotor and locate the friction material at the correct radius. Check hose routing and bleed orientation through the full suspension and steering movement.
This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.
PMB Performance’s team has over 20 years of experience with brake components and fitment. We can help review this caliper against the dimensions and hydraulic requirements of your brake system.
