Wilwood front AERO6 kit components for GM K-Series/Blazer/Jimmy 6-Lug 4x4, black calipers and 15-inch srp drilled and slotted rotors
Wilwood front AERO6 assembly for GM K-Series/Blazer/Jimmy 6-Lug 4x4, black caliper and 15-inch srp drilled and slotted rotor
Wilwood front AERO6 kit components for GM K-Series/Blazer/Jimmy 6-Lug 4x4, black calipers and 15-inch srp drilled and slotted rotors
Wilwood front AERO6 assembly for GM K-Series/Blazer/Jimmy 6-Lug 4x4, black caliper and 15-inch srp drilled and slotted rotor

Wilwood Front Black AERO6 Brakes with 15-Inch SRP Rotors — GM Six-Lug 4x4 (1971–1991)

SKU: 140-18157-D

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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

Black six-piston AERO6 calipers and 15-inch SRP drilled-and-slotted rotors make up this GM 4x4 front kit. The 1.25-inch-thick rotor package includes BP-10 pads but leaves hydraulic hose selection to the specific installation. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are all part of Wilwood Engineering’s range of disc brake systems and components. The Camarillo, California company was founded in 1977 by Bill Wood and designs and manufactures these products for motorsport, street-performance and specialized applications. Compatibility with the complete brake system determines the appropriate component choice.

Technical Details

  • Manufacturer part number: 140-18157-D
  • Rotor specification: Spec-37 Iron, SRP Drilled & Slotted, vented; 15.00 x 1.25 inches
  • Caliper specification: 6-piston AERO6 in Black Powder Coat; radial mount
  • Included service pad compound: BP-10; Stainless pistons
  • Caliper body material: Forged aluminum
  • Hydraulic inlet: 1/8-27 NPT
  • Rotor/hat wheel-stud clearance pattern(s): 6 x 5.5 in; 6 x 139.7 mm; match the installed hub/axle pattern
  • Hydraulic brake hoses: not included; select the correct application-specific lines/fittings
  • Wheel clearance: 19-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
  • Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

Allow for the 15-inch rotor and AERO6 caliper when assessing a listed GM six-lug 4x4 front application. Nominal 19-inch wheels still need a template check. The application table covers selected K-series pickups/Suburbans, Blazer/K5 Blazer and Jimmy vehicles across 1971–1991, with model-specific start and end years.

Follow DS1672 for the hub wheel-stud-hole modification and check the complete hydraulic arrangement. Wilwood recommends a 15/16-inch master cylinder with the factory vacuum booster and pedal; the 1.12-inch original bore causes very high pedal effort and is not recommended. If the rear axle still has drum brakes, include the recommended 10-pound residual valve and a proportioning valve in that circuit. Hydraulic hoses must be purchased separately.

Check the complete application table below, including its model-year splits and configuration notes.

Manufacturer Resources

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.

For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.

Vehicle Applications

Years Make Model Model option Front brakes Rear brakes Kit application Notes
1971-1974, 1987-1991 Chevrolet Blazer 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1991 GMC Jimmy 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1974 GMC K15/K1500 Pickup 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1971-1974 GMC K15/K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K10 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K10 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1986 Chevrolet K5 Blazer 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1978 GMC K15 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1975-1978 GMC K15 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1979-1986 GMC K1500 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1979 GMC K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5
1980-1986 GMC K1500 Suburban 4 x 4 Disc Drum Front Kit 1, 2, 3, 4, 5

Application Notes

  1. Caution: A 15/16” bore master cylinder is recommended for proper brake function when installing this brake kit with the factory brake pedal and vacuum booster.
  2. Wilwood offers a 15/16” bore tandem master cylinder suitable for this application, p/n 260-18184
  3. Using the OE 1.12” bore master cylinder is not recommended and will require very high pedal effort to stop the vehicle.
  4. Line kit included (manufacturer): None
  5. Front line-kit reference: 220-18356