INA FP03031 Accessory Drive Belt Idler Assembly

Accessory Drive Belt Idler Assembly for BMW FEAD Systems

INA FP03031 is an accessory drive belt idler assembly for front end auxiliary drive systems. It is built for high-load engine layouts where vibration control and compact packaging matter, including BMW 745i, 745Li, 760i, and 760Li applications.

• Accessory drive belt idler assembly for FEAD service
• Supports vibration damping in tight installation spaces
• OE-style replacement for front end auxiliary drive system maintenance
• Cross-references Dayco 89531 for the same application
• Part number: FP03031

Detailed Product Information

INA FP03031 is engineered for front end auxiliary drive systems that operate under higher engine loads. The idler assembly helps maintain belt routing and stable operation in compact engine bays, where consistent belt control is important for accessory drive performance. This part is a direct-fit service component for BMW 745i and BMW 745Li models from 2002-2005, BMW 760i models from 2004-2006, and BMW 760Li models from 2003-2009. The part number FP03031 is also identified by INA Global Number 532 0303 100.

Compatible With BMW 745i, BMW 745Li, BMW 760i, and BMW 760Li applications, this accessory drive belt idler assembly supports routine FEAD maintenance on vehicles that use a high-load accessory drive layout. It is also referenced by OE-style interchange numbers 04792835AA, 5320303100, and 11287515280.

What It Helps Address

• Belt tracking issues in the accessory drive system
• Noise from a worn or unstable idler assembly
• Vibration in the front end auxiliary drive system
• Uneven belt movement caused by aging FEAD components
• Service needs on BMW 745i, 745Li, 760i, and 760Li belt drive systems

Installation Notes and Tips

Verify belt routing and inspect the full accessory drive system before installation. Replace worn belts, tensioners, and related pulleys as needed so the new idler assembly can operate correctly. Confirm vehicle fitment by year, model, and OE reference before ordering.

Quality Assurance

INA focuses on FEAD solutions for high-load engines and compact installation spaces, with component designs intended to support vibration damping and system-level maintenance. This part is built as a service replacement for the listed BMW applications.