ACDelco Gold Black Hat Rear Disc Brake Rotor
Gold
Pack of 1

ACDelco Gold Black Hat Rear Disc Brake Rotor

GM Part #19255818

ACDelco Part #18A2733

MSRP$125.14*

ACDelco Gold Disc Brake Rotors are a high quality alternative to Original Equipment (OE) parts.

  • 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 Gold Disc Brake Rotors are a high quality alternative to Original Equipment (OE) parts. 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. They feature a baked-on coating that helps prevent brake pulsation and rotor seizing to the hub. Built with multiple alloys to improve heat dissipation and performance and mill-balanced for proper rotor function, it's validated for proper metallurgy and plate thickness to support reliable braking under real-world thermal stress. ACDelco Gold 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.

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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
  • Premium aftermarket replacement part
  • Quality, performance, and dependability of ACDelco Gold parts are validated through an extensive testing regimen
  • 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
Inside Diameter8.162 in / 207.3 mm
Discard Thickness0.847 in / 21.5 mm
Outside Diameter12.398 in / 314.9 mm
Nominal Thickness0.908 in / 23.05 mm
ClassificationGold
Center Hole Diameter2.65 in / 67.3 mm
MaterialCast Iron
Mounting Bolt Hole Circle Diameter4.72 in / 119.9 mm
Mounting Bolt Hole Diameter0.635 in / 16.15 mm
Hat FinishPainted
Mounting Bolt Hole Quantity5
Overall Height1.883 in / 47.85 mm
Weight18.1lb

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.

ModelBody StyleTrimYear(s)
CT5Luxury, Premium Luxury, Sport, V2020, 2021, 2022, 2023, 2024, 2025
CT62016, 2017, 2018, 2019, 2020
XTS2013, 2014, 2015, 2016, 2017, 2018, 2019