Gates 37191P Alternator Decoupler Pulley

Alternator Decoupler Pulley Overview

The Gates 37191P alternator decoupler pulley is an OE Exact replacement built for accessory belt drive systems that need smoother alternator operation during engine deceleration. It fits 2013-2017 Honda Accord applications with CVT and uses a steel, V-ribbed grooved design for consistent belt contact.

Key Features

• OE Exact comparison rating for direct-style replacement.
• Overrunning decoupler design lets the alternator free-wheel during deceleration.
• Steel construction with a flanged, V-ribbed grooved contact surface.
• Seven-groove pulley profile for belt alignment and engagement.
• Includes pulley and dust cap.

Detailed Description

Gates DriveAlign decoupler pulleys are engineered to isolate vibration in the accessory belt drive system while allowing the alternator to overrun when engine speed drops. That action reduces belt shock, supports smoother engine operation, and helps extend belt and component service life. The 37191P is part of Gates’ decoupler pulley line, which is separate from one-way clutch designs and should be matched to the correct application.

This part cross-references Continental 49944 and Litens 920025A for the same application. For Honda Accord charging system service, confirm the required tool part number 91024-3 before installation. The Gates 37191P is a fitment-specific alternator decoupler pulley for 2013-2017 Honda Accord models with CVT.

What It Is Used For

• Alternator pulley noise caused by belt drive vibration.
• Harsh belt loading during engine deceleration.
• Premature belt wear from accessory drive shock.
• Reduced smoothness in the charging system drive.
• Fitment-specific replacement of a worn decoupler pulley.

Installation Notes and Quality

Installation requires tool 91024-3. Verify pulley style, groove count, and bore dimensions before service, and confirm the application is the decoupler pulley type rather than a one-way clutch. Gates DriveAlign components are built for OE-style service replacement in charging and accessory drive applications.