{"product_id":"powerstop-ar8642-disc-brake-rotor-front","title":"PowerStop AR8642 Disc Brake Rotor - Front","description":"\u003ch2\u003ePower Stop Front OE Stock Replacement Brake Rotor Overview\u003c\/h2\u003e\u003cp\u003eThe Power Stop - Front OE Stock Replacement Brake Rotor AR8642 is engineered to provide reliable braking performance for select GM vehicles. Designed as a direct replacement, this vented disc brake rotor meets original equipment specifications for thickness and dimensions, ensuring consistent stopping power and durability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Cadillac, Chevrolet, GMC, and Hummer models including Avalanche 2500, DeVille, Express 2500\/3500, H2, Savana 2500, Sierra 1500\/1500 HD\/1500 HD Classic\/2500, Silverado 1500 HD\/1500 HD Classic\/2500, Suburban 2500, and Yukon XL 2500\u003c\/li\u003e\n\u003cli\u003ePart number AR8642 for precise fitment\u003c\/li\u003e\n\u003cli\u003eVented rotor design for improved heat dissipation\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 1.50 inches (38.10 mm) with discard thickness at 1.44 inches (36.50 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 12.80 inches (324.00 mm) and overall height of 3.50 inches (89.40 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole circle diameter of 6.50 inches (165.10 mm) with 8 stud\/lug holes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Power Stop Front OE Stock Replacement Brake Rotor Line\u003c\/h2\u003e\u003cp\u003eThe Power Stop - Front OE Stock Replacement Brake Rotor line is designed to match original equipment specifications for front disc brake rotors. This product line focuses on providing a direct OE replacement that maintains factory performance and fitment without additional coatings or modifications. The AR8642 rotor is a vented type, which helps reduce brake fade by improving heat dissipation during braking cycles, making it suitable for heavy-duty and full-size GM trucks and SUVs.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor features a nominal thickness of 1.50 inches (38.10 mm) and a discard thickness of 1.44 inches (36.50 mm), ensuring it meets safety standards for wear limits. The vented design enhances cooling efficiency, which is critical for vehicles like the Chevrolet Silverado 2500 and GMC Sierra 1500 HD that often handle heavy loads. The rotor measures 12.80 inches (324.00 mm) in outside diameter and has an overall height of 3.50 inches (89.40 mm), matching OEM dimensions for proper caliper clearance and brake pad contact. The mounting bolt hole circle diameter is 6.50 inches (165.10 mm) with 8 stud\/lug holes, providing secure attachment to the hub assembly.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped front brake rotors on compatible GM trucks and SUVs\u003c\/li\u003e\n\u003cli\u003eAddresses brake pulsation or vibration caused by uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eRestores proper rotor thickness to maintain braking efficiency and safety\u003c\/li\u003e\n\u003cli\u003eImproves heat dissipation to reduce brake fade during heavy towing or hauling\u003c\/li\u003e\n\u003cli\u003eEliminates noise and uneven pad wear associated with damaged rotors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Power Stop AR8642 rotor, ensure the rotor surface is clean and free of any rust or debris before mounting. Verify that the rotor thickness is above the discard thickness limit of 1.44 inches (36.50 mm) to maintain safe operation. Use proper torque specifications for the 8 lug nuts to secure the rotor firmly. It is recommended to inspect brake pads and calipers during installation to ensure overall brake system integrity.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003ePower Stop manufactures the AR8642 rotor to meet or exceed OEM standards for fit, form, and function. While specific warranty details are not provided, Power Stop products typically undergo rigorous quality control to ensure durability and consistent performance on vehicles such as the Cadillac DeVille and GMC Yukon XL 2500.\u003c\/p\u003e","brand":"PowerStop","offers":[{"title":"Default Title","offer_id":51809456423093,"sku":"BHKQ-AR8642","price":88.92,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/P8_AR8642_Fro.jpg?v=1774642765","url":"https:\/\/www.partcatalog.com\/products\/powerstop-ar8642-disc-brake-rotor-front","provider":"PartCatalog","version":"1.0","type":"link"}