INA FT40541 Accessory Drive Belt Tensioner Assembly - Water Pump and Alternator

INA FT40541 Accessory Drive Belt Tensioner

INA FT40541 is an accessory drive belt tensioner assembly for the FEAD system on select Smart Fortwo models. It is built for the water pump and alternator drive position and supports stable belt control in high-load engine layouts.

• Accessory drive belt tensioner assembly for FEAD service
• Fits 2008-2018 Smart Fortwo, water pump and alternator
• Engineered for vibration damping in tight installation spaces
• Supports coordinated maintenance of the front end auxiliary drive system
• INA Global Number 534 0541 100

Detailed Application

Compatible With 2008-2018 Smart Fortwo models in the water pump and alternator position, this INA FT40541 tensioner assembly is part of the front end auxiliary drive system. It helps maintain proper belt tension in engines that place high demand on accessory drive components, where consistent damping and belt control are important for reliable operation. This part cross-references Continental 49483 for the same application.

Common Problems This Part Addresses

• Belt slack or inconsistent belt tension
• Noise from the accessory drive belt system
• Vibration transfer through the FEAD assembly
• Uneven accessory drive operation at the water pump and alternator
• Wear related to aging tensioner components

Installation Notes and Tips

Verify the vehicle’s accessory drive layout before ordering and match the application to the water pump and alternator position. Inspect the belt, pulleys, and adjacent FEAD components during service, since worn parts in the same system can affect tensioner performance. Confirm the part number FT40541 and the INA Global Number 534 0541 100 against the original unit before installation.

Quality Assurance

INA positions its FEAD components for high-load engine applications and compact installation spaces, with an emphasis on vibration damping and system-level maintenance. Use FT40541 when servicing the accessory drive belt tensioner assembly on the listed Smart Fortwo applications.