Febi 47975 Accessory Drive Belt Tensioner Assembly

Overview of Febi Accessory Drive Belt Tensioner Assembly 47975

The Febi Accessory Drive Belt Tensioner Assembly 47975 is designed for precise belt tension control in various Mercedes-Benz models. Engineered with durable materials and an automatic operating mode, this tensioner supports optimal accessory drive system performance.

• Automatic operating mode for consistent belt tension
• Housing constructed from lightweight aluminium
• Durable plastic pulley material
• 25.0 mm width and 65.0 mm outside diameter dimensions
• Compatible with multiple Mercedes-Benz models including C43 AMG, E350, and GLS450

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, designed to withstand continuous rotation and reduce wear on the belt. With a width of 25.0 mm and an outside diameter of 65.0 mm, the tensioner fits precisely within the accessory drive belt system. The automatic operating mode ensures the belt maintains proper tension without manual adjustment, contributing to consistent engine accessory performance.

Compatible Mercedes-Benz Models

This Febi tensioner assembly 47975 is compatible with a range of Mercedes-Benz vehicles, including but not limited to:

• Mercedes-Benz C43 AMG, C300, C350, C450 AMG
• CLS400
• E300, E350, E400
• GL450, GLC43 AMG, GLE43 AMG, GLE350, GLE400, GLE450 AMG
• GLK300, GLK350
• GLS450
• ML350, ML400

Common Applications and Problem Resolution

This accessory drive belt tensioner assembly is used to maintain proper tension on the accessory drive belt, which powers components such as the alternator, power steering pump, and air conditioning compressor. It addresses issues including:

• Excessive belt slack causing slipping or noise
• Premature belt wear due to improper tension
• Vibration or misalignment in the accessory drive system
• Failure of manual tensioners leading to inconsistent belt tension
• Reduced accessory component efficiency

Installation Notes and Tips

When installing the Febi accessory drive belt tensioner assembly 47975, ensure the belt routing matches the vehicle manufacturer’s specifications. Use appropriate tools to relieve tension from the old tensioner before removal. Verify the pulley alignment and belt tension after installation to prevent premature wear. It is recommended to inspect the accessory drive belt for damage and replace it if necessary during installation.

Quality Assurance and Warranty

Febi parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The aluminium housing and plastic pulley materials are selected for longevity under operating conditions typical of Mercedes-Benz vehicles. This tensioner assembly comes with a limited warranty covering defects in materials and workmanship, providing confidence in its quality and fitment.