Continental 49391 Accessory Drive Belt Tensioner Assembly - Accessory Drive

Reliable Accessory Drive Belt Tensioner for Buick and Chevrolet Vehicles

The Continental Multi-V Accessory Drive Belt Tensioner Assembly (Part Number 49391) is engineered to maintain optimal belt tension in select Buick, Chevrolet, Pontiac, and Saturn models. Designed with precision, this tensioner assembly ensures consistent performance and durability for your vehicle's accessory drive system.

• Includes one flanged thermoplastic pulley with six grooves
• Pulley outside diameter measures 2.91 inches with a width of 1.02 inches
• Pulley bore diameter is 0.670 inches for precise fitment
• Grooved pulley surface enhances belt grip and reduces slippage
• Compatible with multiple GM models including Buick LaCrosse, Chevrolet Malibu, and Pontiac G6

About the Continental Multi-V Product Line

The Multi-V line from Continental focuses on accessory drive belt system components designed for reliable tension and smooth operation. This product line emphasizes durable materials and precise engineering, such as the thermoplastic pulley used in this tensioner assembly, to support long-term vehicle performance and reduce maintenance needs.

Detailed Product Description

This accessory drive belt tensioner assembly features a single flanged pulley constructed from thermoplastic, providing a balance of strength and lightweight design. The pulley includes six grooves and a grooved surface type to ensure proper belt alignment and grip, minimizing belt wear and noise. With a bore diameter of 0.670 inches and an outside diameter of 2.91 inches, this tensioner is designed to fit securely within the accessory drive system of compatible vehicles. The 1.02-inch pulley width supports effective belt engagement, contributing to consistent tension and efficient power transmission.

Compatible Vehicles and Common Applications

• Maintains proper belt tension in Buick Aura, LaCrosse, and Terraza models
• Supports accessory drive systems in Chevrolet Impala, Malibu, Montana, and Relay
• Compatible with Pontiac G6 and Monte Carlo for smooth belt operation
• Fits Saturn Vue and Relay models requiring precise tensioner assembly
• Helps prevent belt slippage, squealing, and premature wear

Installation Notes and Tips

Ensure the vehicle is safely supported and the engine is cool before beginning installation. Verify the pulley bore diameter and groove count match the existing tensioner to confirm compatibility. Proper alignment of the tensioner pulley is critical to avoid belt misalignment and premature wear. Use appropriate tools to relieve tension on the belt system during removal and installation. Consult the vehicle’s service manual for torque specifications and detailed procedures.

Quality Assurance and Warranty

Continental manufactures this tensioner assembly to meet or exceed OEM specifications, using high-quality thermoplastic materials for durability and performance. While specific warranty details are not provided, Continental products typically come with a limited warranty against defects in materials and workmanship. Refer to Continental’s official documentation for complete warranty information.