Febi 48742 Accessory Drive Belt Tensioner Assembly

Overview of Febi Accessory Drive Belt Tensioner Assembly 48742

The Febi Accessory Drive Belt Tensioner Assembly 48742 is designed for precise belt tension control in BMW vehicles. Engineered with durable materials, this automatic tensioner supports optimal performance for models including the BMW 135i, 135is, 335i, 335i xDrive, and X1.

• Automatic operating mode for consistent belt tension
• Housing constructed from lightweight aluminium for durability
• Plastic pulley material to reduce wear and noise
• 30.0 mm width and 70.0 mm outside diameter for exact fitment
• Compatible with BMW 135i, 135is, 335i, 335i xDrive, and X1 models

Technical Details and Material Specifications

This accessory drive belt tensioner assembly features a robust aluminium housing that provides strength while minimizing weight. The pulley is made from high-quality plastic, which helps reduce friction and noise during operation. With a pulley width of 30.0 mm and an outside diameter of 70.0 mm, the tensioner is engineered to maintain proper belt alignment and tension automatically, ensuring reliable accessory drive system performance.

Compatible BMW Models and Part Number Reference

This Febi tensioner assembly, part number 48742, is specifically compatible with several BMW models, including the 135i, 135is, 335i, 335i xDrive, and X1. Using the correct tensioner assembly helps maintain the accessory drive belt system's integrity and prevents premature belt wear or failure.

Common Applications and Problem Resolution

• Maintains proper tension on the accessory drive belt to prevent slippage
• Reduces belt noise caused by improper tension or misalignment
• Prevents premature wear of belts and pulleys in BMW 135i and 335i models
• Supports smooth operation of engine accessories such as alternator and power steering
• Addresses issues related to automatic tensioner failure or loss of tension

Installation Notes and Recommendations

Installation of the Febi Accessory Drive Belt Tensioner Assembly 48742 should be performed by a qualified technician familiar with BMW accessory drive systems. Ensure the belt is properly routed and tensioned according to manufacturer specifications. Verify that the tensioner pulley rotates smoothly and that the automatic tensioning mechanism functions correctly after installation.

Quality Assurance and Warranty Information

Febi manufactures this accessory drive belt tensioner assembly to meet OEM standards for fit, form, and function. The aluminium housing and plastic pulley materials are selected for durability and long service life. While specific warranty details may vary, Febi products typically come with a limited warranty covering defects in materials and workmanship.