Febi 49870 Accessory Drive Belt Tensioner Assembly

Reliable Accessory Drive Belt Tensioner for Mercedes-Benz Models

The Febi 49870 accessory drive belt tensioner assembly is engineered for precise automatic tension control in various Mercedes-Benz vehicles. Designed with durable materials, this component ensures consistent belt performance and longevity for models including the CL63 AMG, E63 AMG, and GLS550.

• Automatic operating mode for consistent belt tension
• Aluminium housing for enhanced strength and heat resistance
• Plastic pulley material to reduce weight and wear
• 25.0 mm width and 65.0 mm outside diameter for exact fitment
• Compatible with a wide range of Mercedes-Benz AMG and standard models

Durable Construction and Precise Fitment

The Febi 49870 tensioner assembly features an aluminium housing that provides robust structural integrity while resisting corrosion and heat damage common in engine compartments. The plastic pulley reduces overall weight and minimizes friction, contributing to smoother belt operation. With a width of 25.0 mm and an outside diameter of 65.0 mm, this tensioner is designed to meet the exact specifications required by Mercedes-Benz accessory drive belt systems. Its automatic operating mode maintains optimal belt tension, reducing the risk of belt slippage or premature wear.

Compatible Mercedes-Benz Models

This accessory drive belt tensioner assembly is compatible with a broad range of Mercedes-Benz vehicles, including but not limited to:

• CL63 AMG, CL550
• CLS63 AMG, CLS500, CLS550
• E63 AMG, E63 AMG S, E500, E550
• G63 AMG, GL63 AMG, GL450, GL500
• GLE63 AMG, GLE63 AMG S, GLE500
• GLS63 AMG, GLS500, GLS550
• ML63 AMG, ML500, ML550
• S63 AMG, S400, S500, S550

Common Issues Addressed by the Febi 49870 Tensioner

• Eliminates belt slippage caused by improper tension
• Prevents premature wear of accessory drive belts
• Reduces noise from loose or worn tensioners
• Maintains consistent belt alignment under varying engine loads
• Helps avoid accessory component failures due to belt issues

Installation Notes and Tips

When installing the Febi 49870 accessory drive belt tensioner assembly, ensure the belt routing matches the vehicle manufacturer’s specifications. Use appropriate tools to relieve tension from the old belt tensioner before removal. Verify the pulley alignment and tension after installation to prevent belt misalignment or excessive wear. This tensioner is designed for direct replacement on compatible Mercedes-Benz models, simplifying the installation process.

Quality Assurance and Warranty

Febi maintains strict quality control standards for its automotive components. The 49870 tensioner assembly is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. While specific warranty details are not provided, Febi products typically come with a limited warranty against defects in materials and workmanship.