Continental 49840 Accessory Drive Belt Tensioner Assembly - Accessory Drive

Accessory Drive Belt Tensioner for OE Fit

Continental Multi-V 49840 is an accessory drive belt tensioner assembly built for direct-fit replacement in select Audi, Volkswagen, and Cadillac applications. It uses Accu-Drive technology with a round torsion spring to help control belt vibration, maintain steady tension, and keep the belt aligned as it wears.

For buyers searching for a Continental 49840 accessory drive belt tensioner assembly, this part is engineered to meet or exceed OEM fit and performance expectations in the accessory drive system.

Key Features

• Accessory drive belt tensioner assembly for Multi-V belt systems
• Accu-Drive torsion-spring design helps dampen vibration and maintain constant tension
• One smooth, non-flanged thermoplastic pulley
• Pulley outside diameter: 2.76 in.
• Pulley width: 1.02 in.
• Pulley bore diameter: 0.670 in.
• Direct replacement for Continental 49840

Product Details

Continental Multi-V 49840 is designed for the accessory drive belt system where stable belt tension and alignment are critical. The tensioner’s spring-loaded design helps compensate for normal belt wear, reducing slack that can lead to noise, belt tracking issues, and uneven accessory loading. This part cross-references Four Seasons 39333 for the same application.

Compatible With select 2019 Cadillac CT6, accessory drive; 2013-2017 Volkswagen Touareg, accessory drive; 2014-2016 Audi A6 Quattro, accessory drive; 2014-2016 Audi A7 Quattro, accessory drive; 2014-2016 Audi A8 Quattro, accessory drive; 2013-2016 Audi Q5, accessory drive; 2013-2016 Audi Q7, accessory drive; and 2011 Audi Q7, accessory drive. The Continental 49840 part number is also associated with OE interchange references 059903133F and 059903133J.

What It Helps Address

• Belt squeal caused by weak or inconsistent tension
• Accessory drive belt flutter and vibration
• Misalignment that can accelerate belt wear
• Noise from a worn tensioner pulley or spring mechanism
• Reduced accessory drive stability in high-mileage service

Installation Notes and Tips

Verify pulley dimensions, belt routing, and OE interchange numbers before installation. Inspect the accessory belt, idler pulleys, and related drive components for wear at the same time, since a new tensioner performs best with a belt system in good condition. Confirm vehicle application by year, make, model, and accessory drive configuration before ordering.

Quality Assurance

Continental designs this Multi-V tensioner assembly to meet or exceed OEM fit and performance requirements, with Accu-Drive technology focused on vibration control, belt wear compensation, and alignment retention.