{"product_id":"centric-121-66083-disc-brake-rotor-rear","title":"Centric 121.66083 Disc Brake Rotor - Rear","description":"\u003ch2\u003eRear Disc Brake Rotor for Heavy-Duty Dual Rear Wheel Trucks\u003c\/h2\u003e\u003cp\u003eCentric C-TEK Standard Disc Brake Rotor 121.66083 is a rear vented rotor built for heavy-duty braking applications. It is listed for 2020-2024 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD dual rear wheel models, giving buyers a direct-fit option for rear brake service on these trucks.\u003c\/p\u003e\u003ch2\u003eC-TEK Standard Rotor Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCentric C-TEK Standard Disc Brake Rotors line for everyday service and value-focused repairs\u003c\/li\u003e\n\u003cli\u003eRear position rotor for Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD DRW applications\u003c\/li\u003e\n\u003cli\u003eVented rotor design with smooth surface type\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 13.976 in. \/ 355.000 mm\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 1.575 in. \/ 40.000 mm\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 1.516 in. \/ 38.500 mm\u003c\/li\u003e\n\u003cli\u003e8 lug holes with 7.087 in. \/ 180.000 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 5.669 in. \/ 144.000 mm\u003c\/li\u003e\n\u003cli\u003eOEM vane count: 47 with straight vane style\u003c\/li\u003e\n\u003cli\u003eABS tone ring not included; bearings not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eCentric Part Number 121.66083 is a rear disc brake rotor engineered for heavy-duty dual rear wheel trucks that need consistent braking performance and service life. The rotor uses a vented construction, smooth friction surface, and straight vane layout to support heat management in demanding stop-and-go and load-carrying conditions. This rotor is listed for 2020-2021 Chevrolet Silverado 3500 HD, rear, heavy duty dual rear wheels, and 2020-2021 GMC Sierra 3500 HD, rear, heavy duty dual rear wheels, plus 2022-2024 Chevrolet Silverado 3500 HD and 2022-2024 GMC Sierra 3500 HD rear DRW applications. This part cross-references Carlson 41359 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat This Rotor Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear brake pulsation from worn or below-spec rotor thickness\u003c\/li\u003e\n\u003cli\u003eReduced braking consistency on heavy-duty DRW trucks\u003c\/li\u003e\n\u003cli\u003eHeat buildup during repeated stops and towing use\u003c\/li\u003e\n\u003cli\u003eRotor replacement needs during brake pad service\u003c\/li\u003e\n\u003cli\u003eFitment-specific rear brake repair on Silverado 3500 HD and Sierra 3500 HD models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rotor dimensions, hub fit, and lug pattern before installation. Clean the hub mounting surface thoroughly to help prevent runout-related brake noise or pedal vibration. Replace pads and inspect calipers, slides, and wheel bearings during rotor service to complete the repair correctly. Confirm rear dual rear wheel fitment for your exact model year before ordering Centric 121.66083.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eCentric positions the C-TEK Standard Disc Brake Rotors line as a practical replacement choice for broad service use, balancing performance, service life, and value. The 121.66083 rotor follows the listed OE-style dimensions and application data for 2020-2024 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD rear brake service.\u003c\/p\u003e","brand":"Centric","offers":[{"title":"Default Title","offer_id":52413542596789,"sku":"BKNJ-121.66083","price":142.43,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12166083_Generic.jpg?v=1777793974","url":"https:\/\/www.partcatalog.com\/products\/centric-121-66083-disc-brake-rotor-rear","provider":"PartCatalog","version":"1.0","type":"link"}