ACDelco Silver Coated Rear Disc Brake Rotor
Silver
Pack of 1

ACDelco Silver Coated Rear Disc Brake Rotor

GM Part #19327707

ACDelco Part #18A2805AC

MSRP$258.40*

ACDelco Silver Disc Brake Rotors are a quality, high value alternative for General Motors vehicles as well as most makes and models and are backed by General Motors.

  • Proper rotor function supports the entire hydraulic braking system
  • Delivers quiet and reliable deceleration for everyday driving
  • Friction surfaces give brake pads a solid place to grip

Pack of 1

About this product

ACDelco Silver Disc Brake Rotors are a quality, high value alternative for General Motors vehicles as well as most makes and models and are backed by General Motors. When your daily commute or heavy traffic driving is interrupted by annoying steering wheel vibrations or a pulsating brake pedal, it is often a sign that your braking surfaces have become warped or deeply scored. Replacing worn components with these coated disc brake rotors restores smooth, predictable stopping power by providing a clean, flat surface for the brake calipers and pads to firmly grip. These disc brake rotors mount to the wheel hub and give the brake pads a stable, true surface to clamp against, helping restore smooth, quiet deceleration and predictable stopping power in daily commuting or repeated heavy stops. Its baked-on coating helps prevent brake pulsation, helps prevent the rotor from seizing to the hub, and provides superior rust prevention against harsh elements, while the non-directional ground finish extends brake pad life and minimizes thickness variation for consistent braking. ACDelco Silver parts are a good choice for many vehicles on the road today.

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  • Proper rotor function supports the entire hydraulic braking system
  • Delivers quiet and reliable deceleration for everyday driving
  • Friction surfaces give brake pads a solid place to grip
  • Maintains consistent braking performance without steering wheel vibrations
  • Ensures smooth and predictable stopping power on the road
  • Dissipates heat generated during the vehicle deceleration process
  • Economical value with dependable quality
  • Quality, performance, and dependability of ACDelco Silver parts are validated through an extensive testing regimen

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

12 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.

ModelBody StyleTrimYear(s)
Sierra 2500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Sierra 3500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025