ACDelco Gold (Professional) Fully Coated Disc Brake Rotors are the 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 slow 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. ⚠ <bold>WARNING:</bold> Cancer and Reproductive Harm - <Underline>https://www.P65Warnings.ca.gov</Underline> COOL SHIELD(TM) coating - entire rotor surface including edges and vanes have baked-on zinc coating for durability and long lasting protection compared to uncoated Coated rotors will remain cleaner longer than non-coated Protective micron-thin layer helps to inhibit environmental corrosion better than non-coated roated rotors; proved in up to 200 hours of industry-standard salt-spray testing 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 Package Dimensions: 17.62 x 16.37 x 4.68 inches Package Weight: 38.1 lb Package Quantity: 1 UPC: 707773940808 ABS Tone Ring Included: No ACDelco Market Indicator CA - L0: Y ACDelco Market Indicator US - L0: Y Bolt Circle Diameter (in): 7.1 in Bolt Circle Diameter (mm): 180 mm Bolt Hole Quantity: 8 Center Bore Diameter (in): 5in Center Bore Diameter (mm): 127mm Center Hole Diameter: 5 IN Center Hole Diameter: 127 MM Construction: Full Cast Conventional Or Drum-In-Hat Type Rotor: Conventional Directional or Non-Directional Brake Surface: No Disc Finish: Ground Discard Thickness: 1.516 IN Discard Thickness: 38.5 MM FAQ - Answer 1: Yes, ACDelco also offers GM OE brake rotor and Advantage brake rotors. FAQ - Question 1: Does ACDelco offer other grades of brake rotors? Features & Benefits - Bullet 1: COOL SHIELD(TM) coating - entire rotor surface including edges and vanes have baked-on zinc coating for durability and long lasting protection compared to uncoated Features & Benefits - Bullet 2: Coated rotors will remain cleaner longer than non-coated Features & Benefits - Bullet 3: Protective micron-thin layer helps to inhibit environmental corrosion better than non-coated roated rotors; proved in up to 200 hours of industry-standard salt-spray testing Features & Benefits - Bullet 4: Some ACDelco Gold parts may have formerly appeared as ACDelco Professional Features & Benefits - Bullet 5: Premium aftermarket replacement part Features & Benefits - Bullet 6: Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models Good Maintenance Practices - Section 1 - Bullet 1: Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations. Good Maintenance Practices - Section 1 - Bullet 2: Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required. Good Maintenance Practices - Section 1 - Bullet 3: Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary). Good Maintenance Practices - Section 1 - Bullet 4: Check the thickness of your brake pads. Good Maintenance Practices - Section 1 - Header: The following inspections and maintenance procedures can help prevent potential brake problems: Good Maintenance Practices - Section 2 - Bullet 1: Inspection of the brake hoses for brittleness or cracking. Good Maintenance Practices - Section 2 - Bullet 2: Inspection of brake lining and pads for wear or contamination by brake fluid or grease. Good Maintenance Practices - Section 2 - Bullet 3: Inspection of wheel bearings and grease seals. Good Maintenance Practices - Section 2 - Bullet 4: Parking brake adjustments (as needed). Good Maintenance Practices - Section 2 - Header: The following should be conducted by a qualified technician: Grade Type: Regular Hat Finish: Turned Height (in): 4 in Height (mm): 102.3 mm Inside Diameter: 9.961 IN Inside Diameter: 253 MM Length (in): 14.2 in Material: Cast Iron Mounting Bolt Hole Circle Diameter: 7.087 IN Mounting Bolt Hole Circle Diameter: 180 MM Mounting Bolt Hole Diameter: 0.636 IN Mounting Bolt Hole Diameter: 16.15 MM Mounting Bolt Hole Quantity: 8 Nominal Thickness: 1.575 IN Nominal Thickness: 40 MM Outside Diameter: 13.976 IN Outside Diameter: 355 MM Overall Height: 4.028 IN Overall Height: 102.3 MM Overall Rotor Diameter (mm): 355.09mm Pad Contact Surface Width: 2 IN Pad Contact Surface Width: 51 MM Product Description: ACDelco Gold (Professional) Fully Coated Disc Brake Rotors are the 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 slow 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. ⚠ <bold>WARNING:</bold> Cancer and Reproductive Harm - <Underline>https://www.P65Warnings.ca.gov</Underline> Programming Required: No Rust Resistant Coating: Yes Signs of Wear & Troubleshooting - Section 1 - Bullet 1: Vehicle pulls to the left or right when brakes are applied. Signs of Wear & Troubleshooting - Section 1 - Bullet 2: Visible ridges or deep grooves on the rotor surface. Slotted: No Solid Or Vented Type Rotor: Vented Stud/Lug Hole Quantity: 8 Surface Type: Smooth Weight (lb): 38.1 lb Width (in): 14.2 in Country of Origin: CN