How Often Should I Replace Brake Rotors?

Brake rotors should be replaced when they are worn down to the minimum thickness, or if they are warped or damaged. DIY brake and rotor replacement is a straightforward process with products available on PartsHawk.com.

What Are Signs Of Brake Problems?

Look out for signs of brake problems like worn brake pads, bad rotor symptoms, and other brake system problems. DIY fix with products from PartsHawk.com.

ACDelco 18A2457 | Front Disc Brake Rotor

Part Number

18A2457

Front Brake Rotor

Fits what vehicles: 2006-2009 Chevrolet Trailblazer, 2008-2009 Saab 9-7x

Special Price $92.70 Regular Price $103.00

Out of stock

Notify me when this product is in stock

Skip to the end of the images gallery

Skip to the beginning of the images gallery

Product Information

Description

ACDelco Gold (Professional) Non-Coated Disc Brake Rotor and Hub Assemblies are a high quality alternative to Original Equipment (OE) parts. These rotors are mounted to the wheel hub where the calipers can press the brake pads against the brake surface to help stop the vehicle. ACDelco Gold (Professional) 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. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Features

Cross drilled for quick brake response and heat dissipation
Black coating on hat and vanes
Quality validated for proper metallurgy and correct brake plate thickness
Tighter tolerances similar to GM OE specifications
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

Specifications

ABS Tone Ring Included:	No
Bolt Circle Diameter (in):	5
Bolt Circle Diameter (mm):	127
Bolt Hole Quantity:	6
Center Bore Diameter (in):	3.1in
Center Bore Diameter (mm):	79.2mm
Center Hole Diameter:	3.117
Center Hole Diameter:	79.15
Construction:	Full Cast
Conventional Or Drum-In-Hat Type Rotor:	Conventional
Disc Finish:	Turned
Discard Thickness:	1.083
Discard Thickness:	27.5
Grade Type:	Regular
Hat Finish:	Turned
Height (in):	2.1
Height (mm):	54.4
Material:	Cast Iron
Mounting Bolt Hole Circle Diameter:	127
Mounting Bolt Hole Circle Diameter:	5
Mounting Bolt Hole Diameter:	0.526
Mounting Bolt Hole Diameter:	13.35
Mounting Bolt Hole Quantity:	6
Nominal Thickness:	1.142
Nominal Thickness:	29
Outside Diameter:	12.795
Outside Diameter:	325
Overall Height:	2.142
Overall Height:	54.4
Overall Rotor Diameter (mm):	324.87mm
Pad Contact Surface Width:	2.5
Pad Contact Surface Width:	63.5
Programming Required:	No
Rust Resistant Coating:	Yes
Slotted:	No
Solid Or Vented Type Rotor:	Vented
Stud/Lug Hole Quantity:	6
Surface Type:	Smooth