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 18A912A Front Disc Brake Rotor

ACDelco Silver 18A912A Front Disc Brake Rotor

Product ID: 303980555

Details

Brand
ACDelco
Exterior finish
Painted
Item diameter
11.2 Inches
Material
Cast Iron
Vehicle service type
Cars

🌀Vented rotor design

🔥Multi-alloy heat dissipation

⚖️Mill-balanced precision

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€ 100.74

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In stock

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Description

🚗 Stop Smarter, Drive Cooler – The Rotor That Means Business

OEM QUALITY YOU CAN TRUST - Validated metallurgy and exact brake plate thickness guarantee a perfect fit and reliable performance.
TOP RATED CHOICE AMONG DRIVERS - With a 4.6-star rating and #38 rank in brake rotors, join thousands upgrading their ride with confidence.
ENGINEERED FOR PEAK PERFORMANCE - Multi-alloy construction ensures superior heat dissipation, keeping your brakes cool under pressure.
VENTED DESIGN FOR MAXIMUM COOLING - Optimized vented rotor structure reduces heat buildup, extending rotor life and brake efficiency.
PRECISION BALANCED FOR SMOOTH STOPS - Mill-balanced rotors eliminate the need for extra weights, delivering flawless braking every time.

The ACDelco Silver 18A912A Front Disc Brake Rotor is a vented, multi-alloy cast iron rotor engineered for enhanced heat dissipation and mill-balanced precision. Designed to meet OEM standards with validated metallurgy and exact thickness, it offers reliable, smooth braking performance. Highly rated by users and compatible with a wide range of cars, this rotor combines durability and efficiency for professional-grade stopping power.

Specifications

ASIN	B003YMRO9G
Best Sellers Rank	#199,422 in Automotive ( See Top 100 in Automotive ) #92 in Car Brake Disc Rotors
Brand Name	ACDelco
Compatible with Vehicle Type	Cars
Country of Publication	China
Customer Reviews	4.6 4.6 out of 5 stars (955)
Exterior Finish	Painted
Global Trade Identification Number	00707773650387
Included Components	Brake Rotor
Item Diameter	11.2 Inches
Item Type Name	Brake Rotor
Manufacturer	ACDELCO
Manufacturer Part Number	19261779
Material Type	Cast Iron
Model Number	18A912A
OEM Equivalent Part Number	19261779
UPC	707773650387
Unit Count	1 Count

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