INA EA0140 Alternator Decoupler Pulley

Alternator Decoupler Pulley for Mercedes-Benz and Sprinter

INA EA0140 is an alternator decoupler pulley for vehicles with high accessory-drive loads. It is built for FEAD systems where vibration control and compact packaging matter, including Mercedes-Benz SL65 AMG, Sprinter 2500, Sprinter 3500, E320, R320, and related applications.

• Alternator decoupler pulley for front end auxiliary drive systems
• OE-style fitment for Mercedes-Benz and Dodge Sprinter applications
• 7-groove pulley design with M16x1.5 mm thread
• 50.0 mm outside diameter and 49.3 mm width
• Supports vibration damping in high-load engine accessory drives
• INA part number EA0140 for direct catalog lookup

Detailed Product Information

INA EA0140 is engineered for FEAD systems that use an alternator decoupler pulley to manage belt dynamics and reduce torsional vibration at the front of the engine. The pulley is specified with an M16x1.5 mm thread, 50.0 mm outside diameter, 49.3 mm width, and 7-groove belt profile. This makes it a direct-fit service part for select Mercedes-Benz SL65 AMG, Sprinter 2500, Sprinter 3500, E320, and R320 applications, as well as Dodge Sprinter models listed in the fitment data. This part cross-references Gates 353740 and Dorman - HELP 55196 for the same application. The INA EA0140 is also referenced by global number 535 0140 100.

Common Issues This Part Can Address

• Belt noise from a worn alternator decoupler pulley
• Accessory-drive vibration at idle or under load
• Irregular belt tracking on 7-groove FEAD systems
• Alternator pulley freewheel or decoupling wear
• Front-end drive stress in high-output diesel and AMG applications

Installation Notes and Tips

Verify the alternator thread size, pulley diameter, groove count, and belt width before installation. Confirm alternator amperage and build date where noted in the fitment data, especially on 2008 Mercedes-Benz R320 and 2010 Sprinter applications. Match the vehicle exactly to the listed year and model, since fitment varies by platform and alternator specification.

Quality Assurance

INA describes this FEAD component line as a solution for vibration damping in compact engine packaging, with individual components and assembled kits available for comprehensive maintenance. Use the listed OE-style specifications and cross-reference data to confirm the correct replacement for your vehicle.