Continental 49931 Alternator Decoupler Pulley

Continental Alternator Decoupler Pulley 49931

Continental 49931 is an alternator decoupler pulley built for vehicles that need smoother accessory drive operation and reduced belt shock during rapid speed changes. It uses a steel pulley body with a grooved surface and flanged design, along with an internal torsion spring and one-way clutch to let the alternator coast when belt speed drops suddenly.

Key Features

• Steel construction for durable alternator drive service
• Grooved pulley surface with 6 grooves for belt engagement
• Flanged pulley design for proper belt tracking
• Internal torsion spring tuned to the application
• One-way clutch allows alternator freewheeling during sudden deceleration
• Includes dust cap component

Product Details

This Continental alternator decoupler pulley, part number 49931, is engineered for charging system applications where belt vibration and drivetrain speed changes can place extra load on the accessory drive. By allowing the alternator to coast when engine speed drops quickly, it helps reduce belt stress and improve rotational smoothness. This part cross-references Gates 37171P for the same application. Compatible with select Toyota Highlander, Toyota RAV4, Toyota Camry, Toyota Sienna, and Scion tC applications.

Common Issues This Part Can Address

• Alternator pulley noise during engine speed changes
• Belt flutter or vibration in the accessory drive
• Harsh belt loading during shutdown or shifting
• Charging system drive irregularities caused by a worn decoupler pulley
• Reduced belt tracking from a damaged grooved pulley surface

Installation Notes

Verify pulley groove count, bore diameter, and belt alignment before installation. Confirm the alternator and accessory drive match the original application for your vehicle. Fits 2014-2019 Toyota Highlander, N/A. Fits 2009-2018 Toyota RAV4, N/A. Fits 2012-2017 Toyota Camry, N/A. Fits 2015-2016 Scion tC, N/A. Fits 2011-2013 Toyota Sienna, N/A.

Quality Assurance

Continental manufactures this pulley with application-specific torsion spring tuning and a one-way clutch design to support consistent alternator decoupling performance in the listed vehicles.