{"product_id":"raybestos-66840r-disc-brake-rotor","title":"Raybestos 66840R Disc Brake Rotor - Rear","description":"\u003ch2\u003eOverview of Raybestos R-Line 66840R Disc Brake Rotor\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 66840R disc brake rotor is engineered for reliable braking performance on select Ford, Jaguar, and Lincoln vehicles. Designed as a vented, conventional rotor, it offers consistent heat dissipation and durability for models like the Ford Thunderbird and Jaguar XJ8.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVented disc brake rotor for improved cooling\u003c\/li\u003e\n\u003cli\u003eOverall height: 1.275 inches (32.400 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 11.335 inches (287.900 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole quantity: 5 with 4.250 inch (107.950 mm) bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 2.538 inches (64.450 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.790 inches (20.050 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 0.728 inches (18.500 mm)\u003c\/li\u003e\n\u003cli\u003eCompatible with Ford LS, Thunderbird, Jaguar S-Type, XJ8, XJR, Lincoln Vanden Plas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 66840R rotor is a vented, conventional disc brake rotor designed to meet the specifications required by various Ford, Jaguar, and Lincoln models. Its vented design enhances heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The rotor features a nominal thickness of 0.790 inches (20.050 mm) and a discard thickness of 0.728 inches (18.500 mm), ensuring safe and effective braking performance throughout its service life. With an overall height of 1.275 inches (32.400 mm) and an outside diameter of 11.335 inches (287.900 mm), this rotor fits vehicles equipped with a 5-bolt mounting pattern and a 4.250 inch (107.950 mm) bolt circle diameter. The center hole diameter of 2.538 inches (64.450 mm) ensures proper alignment and fitment.\u003c\/p\u003e\u003ch2\u003eR-Line Product Line Information\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line product line focuses on delivering reliable, OE-quality brake components designed for a range of domestic and import vehicles. The R-Line rotors, including the 66840R, are engineered to meet or exceed original equipment specifications, providing consistent performance and durability. This line is suitable for drivers seeking dependable replacement parts that maintain factory braking standards.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors causing brake pulsation\u003c\/li\u003e\n\u003cli\u003eRestores braking efficiency on Ford Thunderbird and Jaguar S-Type models\u003c\/li\u003e\n\u003cli\u003eAddresses rotor thickness below discard limits to maintain safety\u003c\/li\u003e\n\u003cli\u003eImproves heat dissipation to reduce brake fade during heavy use\u003c\/li\u003e\n\u003cli\u003eCompatible with Lincoln Vanden Plas and Jaguar XJR for proper fitment\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 nominal specifications\u003c\/li\u003e\n\u003cli\u003eClean mounting surfaces to prevent uneven rotor seating\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications for secure fitment\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and replace if worn to optimize rotor performance\u003c\/li\u003e\n\u003cli\u003eCheck for proper alignment with 5-bolt mounting pattern and 4.250 inch bolt circle diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eRaybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details for part number 66840R may vary, Raybestos typically offers coverage against defects in materials and workmanship. Always consult product documentation or manufacturer resources for exact warranty terms.\u003c\/p\u003e","brand":"Raybestos","offers":[{"title":"Default Title","offer_id":44446495932597,"sku":"BDBL-66840R","price":51.86,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_66840R_Fro.jpg?v=1774636590","url":"https:\/\/www.partcatalog.com\/products\/raybestos-66840r-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}