Dorman 419-668 Accessory Drive Belt Idler Pulley - Lower

Reliable Accessory Drive Belt Idler Pulley for Select GM Vehicles

The Dorman 419-668 accessory drive belt idler pulley is engineered to provide consistent performance for your Buick, Chevrolet, Pontiac, or Saturn vehicle. Designed specifically for models like the Buick Lucerne, Chevrolet Impala, and Pontiac G6, this steel pulley ensures proper serpentine belt tension and routing.

• Constructed from durable steel with a black finish for corrosion resistance
• Outside diameter measures 76.16 mm for precise fitment
• Inside diameter of 17 mm with a 17 mm bearing width for smooth operation
• Compatible with serpentine belt systems requiring a pulley without grooves
• Includes one idler pulley with a single bearing for reliable belt tensioning

Detailed Product Features and Specifications

The Dorman 419-668 idler pulley is designed as a specific fit component for accessory drive belt systems on select GM vehicles. Its steel construction provides strength and durability, while the black coating helps resist wear and environmental factors. The pulley features an outside diameter of 76.16 mm and a width between 32 mm and 38.5 mm, accommodating the serpentine belt path without grooves. The single bearing with a 17 mm width ensures smooth rotation and reduces belt wear. This pulley is intended for use on models including the Buick Lucerne, Chevrolet Malibu, Pontiac G6, Saturn Vue, and others, ensuring compatibility and proper function within the accessory drive system.

Common Applications and Problem Resolution

• Restores proper belt tension and alignment in serpentine belt systems
• Replaces worn or damaged idler pulleys causing belt noise or slippage
• Eliminates belt misrouting issues that can lead to accessory malfunction
• Prevents premature belt wear due to pulley bearing failure
• Supports smooth operation of alternator, power steering, and AC compressor belts

Installation Notes and Tips

When installing the Dorman 419-668 idler pulley, ensure the serpentine belt is properly routed according to the vehicle’s service manual. Use appropriate tools to remove the old pulley and avoid damaging the belt or mounting surfaces. Verify the pulley spins freely without resistance or noise before final assembly. This pulley is designed for specific fitment, so confirm compatibility with your Buick, Chevrolet, Pontiac, or Saturn model prior to installation.

Quality Assurance and Warranty Information

Dorman manufactures the 419-668 idler pulley to meet or exceed OEM specifications for fit, form, and function. The steel construction and precision bearing contribute to long service life under normal operating conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship for a defined period. Refer to Dorman’s warranty policy for complete details.