Continental 49474 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 49474) is engineered for precise belt tension control in select BMW models. Designed to maintain optimal accessory drive belt performance, this tensioner assembly supports reliable operation of engine components.

• Includes two pulleys: one thermoplastic and one steel
• Both pulleys are non-flanged with smooth surfaces
• Pulley 1 dimensions: 0.670 inch bore diameter, 2.76 inch outside diameter, 1.18 inch width
• Pulley 2 dimensions: 0.670 inch bore diameter, 2.76 inch outside diameter, 1.18 inch width
• Compatible with multiple BMW 1 Series and 3 Series models

Detailed Product Features and Specifications

This accessory drive belt tensioner assembly features two pulleys designed to work in tandem for consistent belt tension. Pulley 1 is constructed from durable thermoplastic material, providing lightweight strength, while Pulley 2 is made of steel for enhanced durability. Both pulleys have a bore diameter of 0.670 inches and an outside diameter of 2.76 inches, with a width of 1.18 inches, ensuring precise fitment and smooth belt operation. The smooth pulley surfaces and non-flanged design reduce belt wear and noise during engine operation.

The Multi-V product line from Continental focuses on delivering reliable accessory drive components that meet or exceed OEM specifications. This tensioner assembly is part of that line, designed to provide consistent tension and alignment for multi-ribbed belts in modern BMW engines.

Compatible BMW Models and Applications

• BMW 1 Series M
• BMW 135i
• BMW 335i, 335is, 335i xDrive, 335xi
• BMW 535i, 535i xDrive, 535xi

This tensioner assembly is specifically engineered for these BMW models to ensure proper accessory belt tension and reliable engine accessory operation.

Common Issues Addressed by This Tensioner Assembly

• Accessory belt slippage causing noise or reduced accessory performance
• Premature belt wear due to improper tension
• Vibration or misalignment in the accessory drive system
• Failure of original tensioner components leading to belt failure
• Reduced efficiency of engine-driven accessories such as alternator or power steering pump

Installation Notes and Tips

When installing the Continental Multi-V Accessory Drive Belt Tensioner Assembly (Part Number 49474), ensure the pulleys are aligned correctly with the belt path. Verify that the tensioner provides adequate tension without over-tightening, which can cause premature wear. Use appropriate tools to avoid damage to the thermoplastic pulley and steel pulley surfaces. Refer to the vehicle’s service manual for torque specifications and installation procedures specific to the BMW model.

Quality Assurance and Warranty Information

Continental manufactures this tensioner assembly to meet strict quality standards, ensuring durability and performance. While specific warranty details are not provided here, Continental products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Using OEM-quality components like the Multi-V tensioner assembly helps maintain the integrity of your BMW’s accessory drive system.