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Please, add your first item to the wishlist

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Disc Brake Rotor – Front

PART#: 18A1421
ACDelco
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Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front
Disc Brake Rotor - Front

$81.95

Select vehicle to confirm fitment

In stock

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Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2009GMCEnvoyDenali5.3V8GASFront | 4WD; | RWD;
2009Saab9-7x5.3i5.3V8GASFront | AWD;
2009Saab9-7x4.2i4.2L6GASFront | AWD;
2008ChevroletTrailblazerLT5.3V8GASFront | 4WD; | RWD;
2008ChevroletTrailblazerBase5.3V8GASFront | 4WD; | RWD;
2008GMCEnvoyDenali5.3V8GASFront | 4WD; | RWD;
2008Saab9-7x4.2i4.2L6GASFront | AWD;
2008Saab9-7x5.3i5.3V8GASFront | AWD;
2007BuickRainierCXL5.3V8GASFront | AWD; | RWD;
2007ChevroletTrailblazerLS5.3V8GASFront | 4WD; | RWD;
2007ChevroletTrailblazerLT5.3V8GASFront | 4WD; | RWD;
2007GMCEnvoyDenali5.3V8GASFront | 4WD; | RWD;
2007Saab9-7x5.3i5.3V8GASFront | AWD;
2007Saab9-7x4.2i4.2L6GASFront | AWD;
2006IsuzuAscenderLS5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2006IsuzuAscenderLS4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2006IsuzuAscenderBase4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2006BuickRainierCXL5.3V8GASFront | AWD; | RWD;
2006ChevroletSSRBase6.0V8GASFront | RWD;
2006ChevroletTrailblazer EXTLS5.3V8GASFront | 4WD; | RWD;
2006ChevroletTrailblazer EXTLT5.3V8GASFront | 4WD; | RWD;
2006ChevroletTrailblazer EXTLS4.2L6GASFront | 4WD; | RWD;
2006ChevroletTrailblazer EXTLT4.2L6GASFront | 4WD; | RWD;
2006GMCEnvoyDenali5.3V8GASFront | 4WD; | RWD;
2006GMCEnvoy XLSLT4.2L6GASFront | 4WD; | RWD;
2006GMCEnvoy XLDenali5.3V8GASFront | 4WD; | RWD;
2006GMCEnvoy XLSLE4.2L6GASFront | 4WD; | RWD;
2006Saab9-7x4.2i4.2L6GASFront | AWD;
2006Saab9-7x5.3i5.3V8GASFront | AWD;
2005IsuzuAscenderS5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2005IsuzuAscenderS4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2005IsuzuAscenderLimited5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2005IsuzuAscenderLS5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2005IsuzuAscenderLS4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2005BuickRainierCXL Plus5.3V8GASFront | AWD; | RWD;
2005BuickRainierCXL5.3V8GASFront | AWD; | RWD;
2005ChevroletSSRBase6.0V8GASFront | RWD;
2005ChevroletTrailblazer EXTLS5.3V8GASFront | 4WD; | RWD;
2005ChevroletTrailblazer EXTLT5.3V8GASFront | 4WD; | RWD;
2005ChevroletTrailblazer EXTLS4.2L6GASFront | 4WD; | RWD;
2005ChevroletTrailblazer EXTLT4.2L6GASFront | 4WD; | RWD;
2005GMCEnvoyDenali5.3V8GASFront | 4WD; | RWD;
2005GMCEnvoy XUVSLT5.3V8GASFront | 4WD; | RWD;
2005GMCEnvoy XUVSLE5.3V8GASFront | 4WD; | RWD;
2005GMCEnvoy XUVSLE4.2L6GASFront | 4WD; | RWD;
2005GMCEnvoy XUVSLT4.2L6GASFront | 4WD; | RWD;
2005GMCEnvoy XLSLE4.2L6GASFront | 4WD; | RWD;
2005GMCEnvoy XLSLT5.3V8GASFront | 4WD; | RWD;
2005GMCEnvoy XLSLT4.2L6GASFront | 4WD; | RWD;
2005GMCEnvoy XLSLE5.3V8GASFront | 4WD; | RWD;
2005GMCEnvoy XLDenali5.3V8GASFront | 4WD; | RWD;
2005Saab9-7xLinear4.2L6GASFront | AWD;
2005Saab9-7xArc5.3V8GASFront | AWD;
2004IsuzuAscenderLimited5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2004IsuzuAscenderLS4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2004IsuzuAscenderS4.2L6GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2004IsuzuAscenderLS5.3V8GASFront | 129.0 Inch Wheel; 4WD; | 129.0 Inch Wheel; RWD;
2004BuickRainierCXL Plus5.3V8GASFront | AWD; | RWD;
2004BuickRainierCXL5.3V8GASFront | AWD; | RWD;
2004ChevroletSSRBase5.3V8GASFront | RWD;
2004ChevroletTrailblazer EXTNorth Face5.3V8GASFront | 4WD; | RWD;
2004ChevroletTrailblazer EXTLT5.3V8GASFront | 4WD; | RWD;
2004ChevroletTrailblazer EXTLS4.2L6GASFront | 4WD; | RWD;
2004ChevroletTrailblazer EXTNorth Face4.2L6GASFront | 4WD; | RWD;
2004ChevroletTrailblazer EXTLT4.2L6GASFront | 4WD; | RWD;
2004ChevroletTrailblazer EXTLS5.3V8GASFront | 4WD; | RWD;
2004GMCEnvoy XUVSLT5.3V8GASFront | 4WD; | RWD;
2004GMCEnvoy XUVSLT4.2L6GASFront | 4WD; | RWD;
2004GMCEnvoy XUVSLE5.3V8GASFront | 4WD; | RWD;
2004GMCEnvoy XUVSLE4.2L6GASFront | 4WD; | RWD;
2004GMCEnvoy XLSLE5.3V8GASFront | 4WD; | RWD;
2004GMCEnvoy XLSLE4.2L6GASFront | 4WD; | RWD;
2004GMCEnvoy XLSLT5.3V8GASFront | 4WD; | RWD;
2004GMCEnvoy XLSLT4.2L6GASFront | 4WD; | RWD;
2003IsuzuAscenderLS5.3V8GASFront | 4WD; | RWD;
2003IsuzuAscenderLimited5.3V8GASFront | 4WD; | RWD;
2003IsuzuAscenderBase5.3V8GASFront | 4WD; | RWD;
2003IsuzuAscenderLS4.2L6GASFront | 4WD; | RWD;
2003IsuzuAscenderBase4.2L6GASFront | 4WD; | RWD;
2003IsuzuAscenderLimited4.2L6GASFront | 4WD; | RWD;
2003ChevroletSSRBase5.3V8GASFront | RWD;
2003ChevroletTrailblazer EXTLS5.3V8GASFront | 4WD; | RWD;
2003ChevroletTrailblazer EXTLT5.3V8GASFront | 4WD; | RWD;
2003ChevroletTrailblazer EXTNorth Face4.2L6GASFront | 4WD; | RWD;
2003ChevroletTrailblazer EXTNorth Face5.3V8GASFront | 4WD; | RWD;
2003ChevroletTrailblazer EXTLS4.2L6GASFront | 4WD; | RWD;
2003ChevroletTrailblazer EXTLT4.2L6GASFront | 4WD; | RWD;
2003GMCEnvoy XLSLT5.3V8GASFront | 4WD; | RWD;
2003GMCEnvoy XLSLT4.2L6GASFront | 4WD; | RWD;
2003GMCEnvoy XLSLE4.2L6GASFront | 4WD; | RWD;
2003GMCEnvoy XLSLE5.3V8GASFront | 4WD; | RWD;
2002ChevroletTrailblazer EXTLT4.2L6GASFront | 4WD; | RWD;
2002ChevroletTrailblazer EXTNorth Face4.2L6GASFront | 4WD; | RWD;
2002GMCEnvoy XLSLE4.2L6GASFront | 4WD; | RWD;
2002GMCEnvoy XLSLT4.2L6GASFront | 4WD; | RWD;
About ACDelco

When it comes to top-notch auto parts, one brand that stands tall is ACDelco. Popular for its commitment to quality and innovation, ACDelco has been a trusted name in the automotive industry. At Newparts.com, we're proud to offer a wide selection of ACDelco auto parts, including ACDelco spark plugs, ACDelco alternators, and ACDelco air filters, and other ACDelco parts, all at discounted prices.

ACDelco spark plugs are engineered to deliver exceptional performance and reliability, ensuring optimal engine operation and fuel efficiency. Whether you're cruising down the highway or navigating city streets, you can trust ACDelco spark plugs to keep your engine firing on all cylinders.

When it comes to power generation, ACDelco alternators are second to none. Designed to withstand the challenges of daily driving, ACDelco alternators deliver consistent power output to keep your vehicle's electrical systems running smoothly. With ACDelco alternators from Newparts.com, you can count on reliable performance mile after mile.

In addition to spark plugs and alternators, we also offer a range of ACDelco air filters to help keep your engine breathing clean, fresh air. ACDelco air filters are designed to trap dirt, dust, and other contaminants, preventing them from entering your engine and causing damage. With a high-quality ACDelco air filter from Newparts.com, you can enjoy improved engine performance and extended engine life.

At Newparts.com, we understand that getting the right parts quickly is essential. That's why we offer fast shipping on all ACDelco auto parts, so you can get back on the road with confidence. Plus, with our discounted prices, you can save big on the parts you need to keep your vehicle running smoothly. In case you want to purchase parts by phone, feel free to call us at 855-505-2886 and our customer service team will help you out. 

Whether you're in need of spark plugs, alternators, air filters, or any other ACDelco auto parts, Newparts.com has you covered. Shop our selection today and experience the quality and reliability of ACDelco for yourself.

Specifications
3.1
5
ABS Tone Ring IncludedNo
Bolt Circle Diameter (in)5
Bolt Circle Diameter (mm)127
Bolt Hole Quantity6
Center Bore Diameter (in)3.1in
Center Bore Diameter (mm)79.2mm
Center Hole Diameter3.12
Center Hole Diameter79.25
ConstructionFull Cast
Conventional Or Drum-In-Hat Type RotorConventional
Directional or Non-Directional Brake SurfaceNo
Disc FinishGround
Discard Thickness1.083
Discard Thickness27.5
Features & Benefits - Bullet 1Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Features & Benefits - Bullet 2Premium aftermarket replacement part
Features & Benefits - Bullet 3Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
Grade TypeRegular
Hat FinishTurned
Height2.1
Height (in)2.1
Height (mm)54.3
MaterialCast Iron
Mounting Bolt Hole Circle Diameter127
Mounting Bolt Hole Circle Diameter5
Mounting Bolt Hole Diameter0.517
Mounting Bolt Hole Diameter13.15
Mounting Bolt Hole Quantity6
Nominal Thickness1.142
Nominal Thickness29
Outside Diameter12.795
Outside Diameter12.8
Outside Diameter325
Overall Height2.136
Overall Height54.25
Overall Rotor Diameter (mm)324.87mm
Pad Contact Surface Width2.4
Pad Contact Surface Width61.85
Product DescriptionACDelco Gold (Professional) Non-Coated Disc Brake Rotors are a high quality alternative to Original Equipment (OE) parts. 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. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov
Programming RequiredNo
Rust Resistant CoatingYes
SlottedNo
Solid Or Vented Type RotorVented
Stud/Lug Hole Quantity6
Surface TypeSmooth
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

Newparts.com is your go to store for all parts and accessories at the best price and delivered quickly. Every order we ship receives a tracking number so that you can watch it all the way until it reaches your door. We only ship using the major shipping carriers like FedEx, UPS and USPS to ensure quick and safe delivery of your new car parts order.

Returns Info

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

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