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ACDelco Gold Fully Coated Rear Disc Brake Rotor
Gold

ACDelco Gold Fully Coated Rear Disc Brake Rotor

GM Part #88877683

ACDelco Part #18A2805

MSRP$270.44*

ACDelco Gold (Professional) Fully Coated Disc Brake Rotors are the high quality alternative to Original Equipment (OE) parts.

  • COOL SHIELD coating - entire rotor surface including edges and vanes have baked-on zinc coating for durability and long lasting protection compared to uncoated
  • Coated rotors will remain cleaner longer than non-coated
  • Protective micron-thin layer helps to inhibit environmental corrosion better than non-coated roated rotors; proved in up to 200 hours of industry-standard salt-spray testing

About this product

ACDelco Gold (Professional) Fully Coated Disc Brake Rotors are the high quality alternative to Original Equipment (OE) parts. These rotors are mounted to the wheel hub where the calipers can press the brake pads against the brake surface to help slow the vehicle. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • COOL SHIELD coating - entire rotor surface including edges and vanes have baked-on zinc coating for durability and long lasting protection compared to uncoated
  • Coated rotors will remain cleaner longer than non-coated
  • Protective micron-thin layer helps to inhibit environmental corrosion better than non-coated roated rotors; proved in up to 200 hours of industry-standard salt-spray testing
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

Surface TypeSmooth
ABS Sensor Ring IncludedNo
Solid Or Vented Type RotorVented
ConstructionFull Cast
Rust Resistant CoatingYes
MaterialCast Iron
Discard Thickness1.28 in / 32.5 mm
Nominal Thickness1.339 in / 34 mm
Outside Diameter14.173 in / 360 mm
Pad Contact Surface Width1.9 in / 49.5 mm
Inside Diameter10.276 in / 261 mm
ClassificationGold
Mounting Bolt Hole Diameter0.636 in / 16.15 mm
Overall Height4.685 in / 119 mm
Center Hole Diameter5 in / 127 mm
Disc FinishGround
Hat FinishTurned
Mounting Bolt Hole Quantity8
Mounting Bolt Hole Circle Diameter7.087 in / 180 mm
Weight37lb

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

The following should be conducted by a qualified technician:

  • Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
  • Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
  • Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
  • Check the thickness of your brake pads.
  • Inspection of the brake hoses for brittleness or cracking.
  • Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • Inspection of wheel bearings and grease seals.
  • Parking brake adjustments (as needed).

Troubleshooting Tips:

  • Vehicle pulls to the left or right when brakes are applied.
  • Visible ridges or deep grooves on the rotor surface.

ModelBody StyleTrimYear(s)
Silverado 25002014, 2015, 2016, 2017, 2018
Silverado 2500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Silverado 35002015, 2016, 2017, 2018
Silverado 3500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Suburban 3500 HD2016, 2017, 2018, 2019

Frequently Asked Questions

Yes, ACDelco also offers GM OE brake rotor and Advantage brake rotors.