{"product_id":"centric-121-66034-disc-brake-rotor","title":"Centric 121.66034 Disc Brake Rotor - Front","description":"\u003ch2\u003eReliable Disc Brake Rotor for Chevrolet and GMC 3500 Series\u003c\/h2\u003e\u003cp\u003eThe Centric C-TEK Standard Disc Brake Rotor 121.66034 is engineered for dependable braking performance on heavy-duty vehicles. Designed specifically for Chevrolet and GMC 3500 series models, this vented rotor ensures consistent heat dissipation and smooth braking under demanding conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chevrolet C3500, Express 3500 and GMC G30, Savana 3500 models\u003c\/li\u003e\n\u003cli\u003eVented disc design with straight vane style for enhanced cooling\u003c\/li\u003e\n\u003cli\u003eIncludes ABS tone ring for integrated anti-lock braking system functionality\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 1.539 inches (39.100 mm) with discard thickness at 1.465 inches (37.210 mm)\u003c\/li\u003e\n\u003cli\u003eOverall diameter of 12.496 inches (317.400 mm) and overall height of 8.197 inches (208.200 mm)\u003c\/li\u003e\n\u003cli\u003eStud thread diameter of 14 mm and bolt thread pitch of 1.5 mm for secure mounting\u003c\/li\u003e\n\u003cli\u003eEight stud\/lug holes with a mounting bolt hole circle diameter of 6.5 inches (165.100 mm)\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter of 4.567 inches (116.000 mm) for precise fitment\u003c\/li\u003e\n\u003cli\u003eWeight approximately 49 lbs (22.27 kgs) for balanced performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the C-TEK Standard Disc Brake Rotors Line\u003c\/h2\u003e\u003cp\u003eThe C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for professional and commercial vehicle applications. This product line focuses on providing rotors that meet or exceed OEM specifications, featuring vented designs for improved heat management and smooth surface finishes to reduce brake pad wear. The 121.66034 rotor is part of this line, delivering reliable braking performance for Chevrolet and GMC 3500 series trucks and vans.\u003c\/p\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor features a vented design with straight vanes that promote efficient airflow to dissipate heat during braking. The smooth surface finish helps minimize brake pad wear and noise. The rotor includes an ABS tone ring, ensuring compatibility with factory anti-lock braking systems. With a nominal thickness of 1.539 inches and a discard thickness of 1.465 inches, this rotor maintains structural integrity and safety throughout its service life. The precise stud thread diameter and bolt pitch ensure secure installation on the hub and rotor assembly.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors causing brake pulsation or vibration\u003c\/li\u003e\n\u003cli\u003eUpgrading from solid to vented rotors for improved heat dissipation\u003c\/li\u003e\n\u003cli\u003eRestoring ABS functionality with included tone ring\u003c\/li\u003e\n\u003cli\u003eAddressing rotor thickness below manufacturer discard limits\u003c\/li\u003e\n\u003cli\u003eEnsuring proper fitment on Chevrolet C3500, Express 3500, GMC G30, and Savana 3500 vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify rotor thickness before installation to ensure it meets minimum discard specifications\u003c\/li\u003e\n\u003cli\u003eClean mounting surfaces to prevent uneven rotor seating\u003c\/li\u003e\n\u003cli\u003eTorque lug nuts to manufacturer specifications to avoid rotor warping\u003c\/li\u003e\n\u003cli\u003eInspect related components such as bearings and seals (inner bearing #410.91035, outer bearing #415.66000) during installation\u003c\/li\u003e\n\u003cli\u003eEnsure ABS tone ring is properly aligned for accurate sensor readings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eCentric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric's official documentation for complete warranty information.\u003c\/p\u003e","brand":"Centric","offers":[{"title":"Default Title","offer_id":44571114111157,"sku":"BKNJ-121.66034","price":131.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12166034_Fro_2f095fb0-9b7f-4e5a-beaf-5feb59c7e3bc.jpg?v=1774638779","url":"https:\/\/www.partcatalog.com\/products\/centric-121-66034-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}