Continental 49852 Accessory Drive Belt Tensioner Assembly - Accessory Drive

Overview of Continental Multi-V Accessory Drive Belt Tensioner Assembly

The Continental Multi-V Accessory Drive Belt Tensioner Assembly (Part Number 49852) is engineered for precise belt tension control in select BMW models. Designed with two thermoplastic pulleys, this tensioner assembly supports smooth operation of the accessory drive belt system, ensuring reliable performance in vehicles such as the BMW 328d and X5.

• Includes two non-flanged thermoplastic pulleys
• Pulleys feature smooth surfaces for optimal belt contact
• Pulley 1 dimensions: 0.670 inch bore diameter, 2.36 inch outside diameter, 1.02 inch width
• Pulley 2 dimensions: 0.670 inch bore diameter, 2.56 inch outside diameter, 1.02 inch width
• Compatible with multiple BMW diesel and xDrive models

Detailed Product Features and Specifications

This accessory drive belt tensioner assembly from Continental’s Multi-V line includes two pulleys made from durable thermoplastic material, designed to reduce wear and maintain belt alignment. Both pulleys are non-flanged and have smooth surfaces, which help minimize belt slippage and noise. Pulley 1 has a bore diameter of 0.670 inches, an outside diameter of 2.36 inches, and a width of 1.02 inches. Pulley 2 shares the same bore diameter and width but has a slightly larger outside diameter of 2.56 inches. These precise dimensions ensure compatibility and proper fitment within the accessory drive belt system of specific BMW models.

About the Continental Multi-V Product Line

The Multi-V product line by Continental focuses on components designed for multi-ribbed belt systems, commonly found in modern automotive accessory drives. This tensioner assembly is part of that line, providing reliable tension control and pulley performance to maintain the efficiency and longevity of the belt system in BMW vehicles.

Compatible BMW Models and Applications

• BMW 328d and 328d xDrive
• BMW 535d and 535d xDrive
• BMW 740Ld xDrive
• BMW X3 and X5

This part number 49852 is specifically engineered to meet the requirements of these diesel and xDrive BMW models, ensuring proper fit and function within their accessory drive belt systems.

Common Issues Addressed by This Tensioner Assembly

• Eliminates belt slippage caused by worn or misaligned pulleys
• Prevents premature belt wear due to improper tension
• Reduces noise from accessory drive belt system
• Maintains consistent belt tension for optimal accessory performance
• Supports smooth operation of alternator, power steering, and other belt-driven components

Installation Notes and Tips

When installing the Continental Multi-V Accessory Drive Belt Tensioner Assembly (49852), ensure the pulleys are properly aligned with the belt path to avoid premature wear. Verify that the bore diameters match the mounting points on the vehicle. Use appropriate tools to maintain correct tension during installation. Refer to the BMW service manual for torque specifications and installation procedures specific to the 328d, 535d, 740Ld xDrive, X3, and X5 models.

Quality Assurance and Warranty Information

Continental manufactures this tensioner assembly to meet OEM standards for durability and performance. The thermoplastic pulleys are designed to withstand typical operating temperatures and stresses found in BMW accessory drive systems. While specific warranty details are not provided here, Continental products generally come with manufacturer-backed quality assurance to support reliable service life.