Centric 121.66047 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Buick, Oldsmobile, and Pontiac

The Centric C-TEK Standard Disc Brake Rotor 121.66047 is engineered to provide consistent braking performance for select Buick, Oldsmobile, and Pontiac models. Designed specifically for vehicles like the Aztek, Montana, Rendezvous, and Silhouette, this vented rotor ensures effective heat dissipation and durability under normal driving conditions.

• Vented disc brake rotor with straight vane design for improved cooling
• Nominal thickness of 1.181 inches (30.000 mm) with discard thickness at 1.118 inches (28.400 mm)
• Overall height of 2.047 inches (52.000 mm) and outside diameter of 11.811 inches (300.000 mm)
• Floating disc mounting style with 5 lug holes, each 0.555 inches (14.100 mm) in diameter
• Smooth surface type without ABS tone ring included
• Center hole diameter of 2.795 inches (71.000 mm) and mounting bolt hole circle diameter of 4.500 inches (114.300 mm)
• Weight approximately 19.85 lbs (9.02 kgs) for balanced handling

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable replacement rotors designed to meet or exceed OEM specifications. This product line focuses on providing solid and vented rotors with precise fitment and consistent performance. The 121.66047 rotor is part of this line, delivering a vented design with straight vanes to help maintain optimal braking temperatures for vehicles such as the Buick Aztek and Pontiac Montana.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes that promote efficient heat dissipation, reducing the risk of brake fade during extended use. The smooth surface type ensures even pad contact and wear. With a floating disc mounting style, the rotor allows for slight movement to accommodate thermal expansion and contraction. The rotor’s dimensions, including an outside diameter of 11.811 inches and a nominal thickness of 1.181 inches, are tailored for proper fitment on compatible vehicles. The 5-lug hole pattern with a 4.5-inch bolt circle diameter matches factory specifications for the Buick Rendezvous and Oldsmobile Silhouette models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below discard limits to maintain safe braking
• Improving heat dissipation to reduce brake fade on vented rotor-equipped vehicles
• Restoring proper rotor dimensions for consistent pad contact and braking performance
• Ensuring compatibility with specific Buick, Oldsmobile, and Pontiac models requiring 5-lug vented rotors

Installation Notes and Tips

Before installation, verify rotor dimensions and bolt pattern against your vehicle’s specifications. Clean the rotor surface to remove any protective coatings or contaminants. Use proper torque specifications for lug nuts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, ensure these components are inspected and replaced separately if necessary. It is recommended to replace rotors in pairs to maintain balanced braking performance.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. For detailed warranty information, refer to Centric’s official documentation or contact authorized distributors.