Raybestos 66799R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 66799R

The Raybestos R-Line Disc Brake Rotor 66799R is engineered for reliable braking performance on select Ford vans. Designed specifically for models like the Ford E-150, E-250, and E-350 Econoline series, this rotor meets precise specifications to ensure proper fit and function.

• Part Number: 66799R
• Brand: Raybestos R-Line
• Type: Vented Drum-in-Hat Disc Brake Rotor
• Outside Diameter: 12.830 inches (325.9 mm)
• Nominal Thickness: 1.185 inches (30.1 mm)
• Discard Thickness: 1.102 inches (28.0 mm)
• Overall Height: 3.870 inches (98.3 mm)
• Mounting Bolt Hole Quantity: 8
• Center Hole Diameter: 5.000 inches (127.0 mm)
• Mounting Bolt Hole Circle Diameter: 6.500 inches (165.1 mm)
• Stud/Lug Hole Quantity: 8

Detailed Product Description

This Raybestos R-Line disc brake rotor 66799R is a vented, drum-in-hat type rotor designed to provide effective heat dissipation and consistent braking performance. The vented design helps reduce brake fade by allowing air to circulate between the rotor surfaces, which is critical for heavy-duty applications such as the Ford E-350 Super Duty and E-350 Club Wagon. The drum-in-hat configuration integrates a parking brake drum within the rotor, making it compatible with vehicles equipped with drum parking brakes.

With an outside diameter of 12.830 inches and a nominal thickness of 1.185 inches, this rotor fits securely on the specified Ford Econoline models. The 8 mounting bolt holes and 8 stud/lug holes ensure proper alignment and secure installation. The center hole diameter of 5.000 inches and mounting bolt hole circle diameter of 6.500 inches are engineered to match factory specifications for these vehicles.

Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on delivering dependable replacement brake components that meet or exceed OEM standards. This line is designed for professional mechanics and vehicle owners who require rotors that maintain consistent performance under demanding conditions. The 66799R rotor exemplifies the R-Line’s commitment to quality and fitment accuracy for Ford Econoline vans.

Applications and Problem Solving

• Compatible with Ford E-150, E-150 Econoline, E-250, E-250 Econoline, E-350 Club Wagon, E-350 Econoline, E-350 Econoline Club Wagon, and E-350 Super Duty models
• Addresses brake rotor wear and thickness below discard limits
• Resolves issues related to brake fade due to overheating
• Replaces warped or damaged rotors causing vibration or noise
• Restores proper parking brake function with integrated drum-in-hat design

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness of 1.102 inches before installation
• Clean mounting surfaces and check for hub runout to prevent uneven wear
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to maintain optimal braking performance
• Use proper tools to avoid damage to the vented rotor fins during installation

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring durability and consistent braking performance. While specific warranty details for part number 66799R should be confirmed with the supplier, Raybestos typically offers limited warranties covering defects in materials and workmanship. This rotor is engineered to provide reliable service life when installed and maintained according to vehicle manufacturer guidelines.