Should I replace rotors in pairs?

Yes, always replace brake rotors in axle pairs (both front or both rear) to ensure balanced braking performance. Uneven rotors cause pulling and uneven pad wear.

Do I need new brake pads with new rotors?

Highly recommended. Old pads have worn to match your old rotors. New pads with new rotors ensure optimal contact and stopping power.

Is this part covered by warranty?

Yes, this GM Genuine Parts Disc Brake Rotor includes a 24-month limited warranty covering defects in materials and workmanship. AutoBuffy also offers 30-day hassle-free returns if the part doesn't fit your vehicle.

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We can’t guarantee fitment or accept fitment returns without a vehicle selected.

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Non-Coated Front Disc Brake Rotor

Name: Non-Coated Front Disc Brake Rotor
Brand: GM Genuine Parts
SKU: 18A1634A
Availability: InStock
Rating: 4.9 (12847 reviews)

Authorized Dealer

Special Offer

Buy 2, Get 5% Off

2 for $0.00•Save $0.00

Non-Coated Front Disc Brake Rotor

BrandGM Genuine PartsLearn More

PositionFront

Qty/Vehicle2

ConditionNew

Includes: (1) Disc Brake Rotor, Hardware

$000

•In Stock•Fast Shipping

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Product Specifications

Features & Benefits

•Direct OE fit - no modifications needed
•Meets or exceeds manufacturer specs
•24-month warranty included
•Fast Shipping — ships same day before 3 PM ET

BrandGM Genuine Parts

Part Number18A1634A

Part TypeDisc Brake Rotor

ConditionNew

Qty Per Vehicle2

Abs Tone Ring IncludedNo

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Frequently Asked Questions

We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.

What vehicles does this Disc Brake Rotor fit?

This GM Genuine Parts Disc Brake Rotor (Part #18A1634A) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.

Is this an OEM or aftermarket part?

This is a premium aftermarket Disc Brake Rotor by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.

What warranty is included?

This GM Genuine Parts Disc Brake Rotor is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.

How long does shipping take?

Fast shipping — orders before 3 PM ET ship the same day. Most arrive within 3-5 business days.

Can I return this if it does not fit?

30-day money-back guarantee. Return unused parts in original packaging for full refund.

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Product Specifications

Brand

GM Genuine Parts

Part Type

Disc Brake Rotor

Bolt Circle Diameter (In)

4.5 in

Center Bore Diameter (In)

2.7in

Part Number

18A1634A

Abs Tone Ring Included

Bolt Circle Diameter (Mm)

114.3 mm

Center Bore Diameter (Mm)

68.6mm

Abs Tone Ring IncludedNo

Bolt Circle Diameter (In)4.5 in

Bolt Circle Diameter (Mm)114.3 mm

Center Bore Diameter (In)2.7in

Center Bore Diameter (Mm)68.6mm

Center Hole Diameter2.717 IN

Conventional Or Drum-In-Hat Type RotorConventional

Grade TypeRegular

Length (In)11.25 in

MaterialCast Iron

Mounting Bolt Hole Circle Diameter4.5 IN

Mounting Bolt Hole Diameter0.495 IN

Outside Diameter10.85 IN

Solid Or Vented Type RotorVented

Surface TypeSmooth

Bolt Hole Quantity5

ConstructionFull Cast

Disc FinishNon Directional

Discard Thickness0.961 IN

Features Benefits - Bullet 1Some ACDelco Silver parts may have formerly appeared as ACDelco Advantage

Features Benefits - Bullet 2Economical value with dependable quality

Features Benefits - Bullet 3For General Motors vehicles as well as most makes and models

Hat FinishPlain

Height (In)1.8 in

Height (Mm)45.7 mm

Mounting Bolt Hole Quantity5

Nominal Thickness1.025 IN

Overall Height1.815 IN

Product DescriptionACDelco Silver (Advantage) Disc Brake Rotors are a quality, high value alternative for General Motors vehicles as well as most makes and models and are backed by General Motors. ACDelco Silver (Advant

Programming RequiredNo

Rust Resistant CoatingNo

SlottedNo

Stud/Lug Hole Quantity5

Weight13.9 LB

Width (In)11.25 in

Check if this fitsShop worry-free by verifying fitment first. If the part doesn't fit, we'll make it right or refund you. Learn more

Main Image

Click to expand

Non-Coated Front Disc Brake Rotor

Authorized Dealer

Special Offer

Buy 2, Get 5% Off

2 for $0.00•Save $0.00

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Part #:18A1634A

Call 888-477-2530 for Price

OE REPLACEMENT

Non-Coated Front Disc Brake Rotor

Part #:18A1634A

Disc Brake Rotor

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Quantity:

In Stock10 or more available

Fast delivery between Mon, Jun 22 to Mon, Jun 22

Ships To:

Call 888-477-2530 for Price

Key Features

OEM-Equivalent QualityMeets/exceeds factory specs

American BusinessMaryland since 1986

24-Month WarrantyLimited coverage on every part

Fast Same Day ShippingWe ship all orders the same business day before cutoff

Product Specs

BrandGM Genuine Parts

Part Number18A1634A

Part TypeDisc Brake Rotor

ConditionNew

Abs Tone Ring IncludedNo

Bolt Circle Diameter (In)4.5 in

Bolt Circle Diameter (Mm)114.3 mm

Center Bore Diameter (In)2.7in

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Questions & Answers

Have a Question?

Ask Marvin, our Car Expert

Things to Know

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts

Check if this fits your car first

Non-Coated Front Disc Brake Rotor

Non-Coated Front Disc Brake Rotor

Product Specifications

Compatibility

Vehicle Compatibility

Frequently Asked Questions

Compatibility

Vehicle Compatibility

Product Specifications

Non-Coated Front Disc Brake Rotor

Non-Coated Front Disc Brake Rotor

Key Features

Product Specs

Compatibility

Vehicle Compatibility

Questions & Answers

Things to Know

24 Month Warranty

30 Day Returns

Fast Same Day Shipping

About This Disc Brake Rotor

Key Features

Signs This Part Needs Replacement

GM Genuine Parts

Installation Guide

Tools Needed

Frequently Asked Questions