{"product_id":"centric-121-66021-disc-brake-rotor","title":"Centric 121.66021 Disc Brake Rotor - Front","description":"\u003ch2\u003eReliable Disc Brake Rotor for Chevrolet and GMC Vans\u003c\/h2\u003e\u003cp\u003eThe Centric 121.66021 disc brake rotor is engineered for dependable braking performance on Chevrolet G30, GMC P30, and P3500 models. Designed to meet OEM specifications, this rotor ensures consistent stopping power and durability for your vehicle's braking system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 121.66021\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet G30, GMC P30, and P3500\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with smooth surface finish\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 12.5 inches (317.5 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 1.535 inches (38.99 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 1.465 inches (37.21 mm)\u003c\/li\u003e\n\u003cli\u003eStud thread diameter: 0.563 inches\u003c\/li\u003e\n\u003cli\u003e8 lug holes with 6.5-inch bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eOverall height: 7.685 inches (195.2 mm)\u003c\/li\u003e\n\u003cli\u003eStraight vane style for effective heat dissipation\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 rotors designed to meet or exceed OEM standards for fit, form, and function. This product line focuses on providing reliable braking components with precise engineering, including vented rotors that help maintain optimal operating temperatures. The 121.66021 rotor is part of this line, delivering consistent performance for heavy-duty Chevrolet and GMC vans.\u003c\/p\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis vented disc brake rotor features a smooth surface type and straight vane design to promote efficient heat dissipation during braking. The rotor measures 12.5 inches in outside diameter and has a nominal thickness of 1.535 inches, with a discard thickness of 1.465 inches, indicating when replacement is necessary. It includes 8 stud\/lug holes with a 6.5-inch bolt circle diameter and a stud thread diameter of 0.563 inches. The overall height of the rotor is 7.685 inches, ensuring proper fitment on compatible Chevrolet G30, GMC P30, and P3500 models. Note that this rotor does not include an ABS tone ring or bearings.\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\u003c\/li\u003e\n\u003cli\u003eAddressing reduced braking efficiency due to rotor thickness below discard limits\u003c\/li\u003e\n\u003cli\u003eEliminating noise and vibration from uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eUpgrading to vented rotors for improved heat management in heavy-duty vans\u003c\/li\u003e\n\u003cli\u003eEnsuring proper fitment on Chevrolet G30, GMC P30, and P3500 brake systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eBefore installation, verify rotor dimensions and compatibility with your vehicle's make and model. Ensure the hub and rotor mounting surfaces are clean and free of debris. Use proper torque specifications for the 8 lug nuts to avoid rotor warping. Since this rotor does not include bearings or seals, inspect and replace those components separately if needed. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eCentric's C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 121.66021 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or Centric directly for warranty terms applicable to this rotor.\u003c\/p\u003e","brand":"Centric","offers":[{"title":"Default Title","offer_id":44571113324725,"sku":"BKNJ-121.66021","price":150.81,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12166021_Fro.jpg?v=1774638775","url":"https:\/\/www.partcatalog.com\/products\/centric-121-66021-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}