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

Friction material on the brake pad contacts the rotors to slow the vehicle. In time, that material wears away and the pads must be replaced. Sometimes the rotors and calipers must also be replaced.

What’s the squealing sound I hear when braking?

Over time, wear indicators in brake 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.

Why do the brakes seem to pulsate when stopping?

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

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 unevenly worn, there can be a significant vibration or shaking in the steering wheel when braking. It may mean brake service is needed immediately.

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ACDelco Gold 18B555 (19183586) Rear Brake Drum

ACDelco Gold 18B555 (19183586) Rear Brake Drum

Product ID: 12855221

🔥OE heat-dispersing design for longevity

⚖️Precision balanced for smooth braking

🛡️Rust-preventative coating for durability

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$214.53

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Description

🛑 Stop at Nothing: Upgrade to ACDelco Gold for flawless, fade-free braking!

OEM GRADE HEAT MANAGEMENT - Original equipment design optimizes heat dispersion, protecting your pads and rotors from premature wear.
CORROSION RESISTANT FINISH - Advanced rust-preventative coating keeps your brake drums looking sharp and performing reliably season after season.
PLUG AND PLAY INSTALLATION - No machining required—ready to install straight out of the box for hassle-free upgrades.
BUILT TO LAST WITH PREMIUM MATERIALS - Constructed from G3000 SAE qualified steel, delivering maximum structural integrity and extended service life.
ENGINEERED FOR FLAWLESS STOPPING POWER - Inspected and balanced to eliminate noise and vibration, ensuring a smooth, confident brake every time.

The ACDelco Gold 18B555 Rear Brake Drum is a premium, OE-spec replacement part crafted from G3000 SAE steel. It features precision balancing and an advanced rust-resistant coating, tested rigorously for noise, vibration, and durability. Designed for easy installation with no machining needed, it ensures superior heat dispersion to extend brake component life, making it a trusted choice for GM and non-GM vehicles alike.

Specifications

ASIN	B000JZZ36W
Best Sellers Rank	#95,713 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Replacement Brake Drums
Brand	ACDelco
Customer Reviews	4.6 4.6 out of 5 stars (512)
Date First Available	October 10, 2007
Exterior	Machined
Item Weight	22.4 pounds
Item model number	18B555
Manufacturer	ACDelco
Manufacturer Part Number	19183586
Model	Brake Drum
OEM Part Number	19183586
Position	Rear
Product Dimensions	13.56 x 13.56 x 4.58 inches

Reviews

J**N

1.02.2025

W**S

8.09.2025

D**O

19.07.2025

R**O

19.05.2025

Z**1

11.01.2026

R**E

23.05.2017

D**E

6.06.2025

E**S

12.09.2024

L**N

22.07.2021

D**.

24.01.2022

M**U

10.12.2020

T**R

9.10.2019

A**R

17.07.2019

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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