Why do brakes need to be replaced in the first place?

Friction material on the brake pads or shoes rubs against rotors or drums to slow the vehicle. In time, that material wears away and the pads/shoes must be replaced. Sometimes the rotors and drums also must be replaced.

What’s the squealing sound I hear when braking?

Over time, wear indicators in brakes pads may contact the rotors’ surface when braking, resulting in a metallic squealing sound. Vehicles equipped with wear sensors may also provide an alert that minimum brake pad thickness has been reached.

What if it’s more of a grinding sound?

If all the friction material has been worn away, the metal backing plate of the brake pad will be the material in contact with the rotor during braking. It causes a grinding sound and braking performance is often diminished.

What about vibrations or shaking in the steering wheel?

This is more serious than pulsation. If the brakes are very worn or the rotors are warped, there can be a significant vibration or shaking in the steering wheel when braking. It may mean brake service is needed immediately.

Why do the brakes seem to pulsate when stopping?

It may be due to poor-quality brake pads, warped rotors or unevenly worn tires. Have the pulsation diagnosed as soon as possible to avoid the possibility of greater brake system wear or damage.

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ACDelco Silver Rear Brake Rotor 18A2543A | GM 19255508 Brake Rotors for Select Buick Enclave, Chevrolet Traverse, Chevy, Saturn, GMC Acadia and more

ACDelco Silver Rear Brake Rotor 18A2543A | GM 19255508 Brake Rotors for Select Buick Enclave, Chevrolet Traverse, Chevy, Saturn, GMC Acadia and more

Product ID: 12577518

Details

Automotive Fit Type
Vehicle Fit
Brand
ACDelco
Exterior Finish
Chrome
Global Trade Identification Number
Manufacturer
ACDelco
Material
Cast Iron

🔇Reduced noise & vibration for smooth rides

🔥Superior heat dissipation with multi-alloy design

🛠️Precision vehicle-specific fit for easy install

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$U10436

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Upgrade your stop game with precision and peace of mind!

EXTEND YOUR BRAKE LIFE - Smooth rotor surface reduces pad wear and thickness variation, saving you money on replacements.
STAY COOL UNDER PRESSURE - Multi-alloy construction and optimized vane design maximize heat dissipation to prevent brake fade during intense drives.
WHISPER QUIET PERFORMANCE - Non-directional ground finish and balanced rotor design minimize noise and vibration, delivering a serene driving experience.
PERFECT FIT ZERO GUESSWORK - Compatible with Buick, Chevrolet, GMC, Saturn models; Confirm your fit in 3 easy steps with the VIN tool.
BUILT TOUGH FOR DAILY DEMANDS - Rounded radius edges enhance structural strength, ensuring durability even under heavy braking conditions.

The ACDelco Silver Rear Brake Rotor 18A2543A is a cast iron, vehicle-specific rear rotor engineered for select Buick, Chevrolet, GMC, and Saturn models. Featuring multi-alloy construction and optimized vane configuration, it offers superior heat dissipation and reduced brake fade. Its non-directional finish minimizes noise and vibration, while a smooth surface extends brake pad life. Durable and easy to install, this GM-backed rotor ensures reliable, quiet braking performance tailored for daily driving.

Specifications

ASIN	B005QW93P0
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#104,085 in Automotive ( See Top 100 in Automotive ) #79 in Automotive Replacement Brake Rotors
Brand	ACDelco
Brand Name	ACDelco
Compatible with Vehicle Type	Car, SUV
Customer Reviews	4.7 out of 5 stars 609 Reviews
Exterior Finish	Chrome
Global Trade Identification Number	00707773846629
Included Components	Brake Rotor
Item Type Name	Brake Rotor
Item Weight	17.8 Pounds
Manufacturer	ACDelco
Manufacturer Part Number	19255508
Manufacturer Warranty Description	24 Months / Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details
Material	Cast Iron
Material Type	Cast Iron
Model Number	18A2543A
OEM Equivalent Part Number	19255508
UPC	707773846629
Unit Count	1.0 Count
Vehicle Service Type	Car, SUV

Reviews

A**D

Solid Stops

Good rotor and even better price. Does the job.

10.12.2025

A**R

Exact fit and size

Order received in good condition and appearance. Not yet fully tested. Hope it is effective and will last a long time. Exact fit and size when installed.

19.03.2026

R**N

Great product

Exactly as described

9.10.2025

A**S

Great Price, Great Fit

Works just fine, on my car right now. Perfect fit, easy to install. You don't always have to pay the high prices auto parts stores charge. If you pay attention, and get the right part, Amazon is the place to purchase parts. Not only that, but your getting the same parts that other places hike up the price on.

20.10.2025

J**N

Great product for the price

Fits 2013 Acadia fine!! Great product for money!

10.12.2025

M**Y

Quality good parts fit the vehicle

The quality was good

24.07.2025

A**R

2013 rear brake rotors

I bought these for my 2013 Acadia. They were exactly as described and fit perfectly.

19.01.2026

S**S

“Smooth Braking”

Fits my GMC Acadia perfectly, smooth braking, No vibration & Smooth braking. No dust & durable material.

17.10.2025

R**T

Value

Spot on fit great fast shipping

13.06.2019

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