INA FT40FT4 Accessory Drive Belt Tensioner

INA FT40FT4 Accessory Drive Belt Tensioner

INA FT40FT4 is an accessory drive belt tensioner for FEAD systems that need stable belt control in tight engine bays. It is built for high-load engines where vibration damping and consistent belt tension are important for reliable accessory drive operation.

• Accessory drive belt tensioner for front end auxiliary drive systems
• Supports vibration damping in compact installation spaces
• Helps maintain consistent belt tension under engine load
• OE-style fitment for select Honda Civic and Acura ILX applications
• Part number FT40FT4 for catalog and cross-reference lookup

Fitment and Application Details

Compatible with 2013-2015 Acura ILX and 2012-2015 Honda Civic. Fits 2013-2015 Acura ILX, N/A; fits 2012-2015 Honda Civic, N/A. This part cross-references Dayco 89600 and Four Seasons 39385 for the same application.

Use INA FT40FT4 when servicing the accessory drive belt system on a Honda Civic or Acura ILX that calls for the INA Global Number 534 0534 100. The tensioner helps keep the FEAD belt tracking and tensioned so the accessory drive system can operate as intended. Search terms such as Honda Civic accessory drive belt tensioner, Acura ILX belt tensioner replacement, and FT40FT4 tensioner fitment all point to this application.

Common Problems It Can Address

• Belt squeal from weak or inconsistent tension
• Belt flutter caused by vibration in the drive system
• Uneven accessory drive performance from worn tension control
• Noise from a tensioner that no longer maintains proper belt load
• Premature belt wear related to poor belt tracking

Installation Notes and Quality

Verify the vehicle’s engine and belt routing before installation, and compare the existing tensioner to the OE reference and part number FT40FT4. Inspect the accessory belt, pulleys, and related FEAD components at the same time so the new tensioner is not installed against worn parts. INA’s FEAD component focus centers on vibration damping and compact packaging for modern high-load engines.

Quality assurance is supported by INA’s OE-oriented engineering approach for front end auxiliary drive systems. No warranty information was provided in the product data.