Gates 37013P Alternator Decoupler Pulley

Gates 37013P Alternator Decoupler Pulley

The Gates 37013P is a DriveAlign alternator decoupler pulley built for vehicles that need smoother accessory belt operation and better vibration control. It allows the alternator to free-wheel during engine deceleration, helping reduce belt shock and supporting more consistent charging system performance.

Key Features

• One-way clutch decoupler pulley for alternator drive systems
• Steel construction for durable service in charging system applications
• 6-groove V-ribbed grooved contact surface
• Flanged design for OE-style fitment
• OE Exact comparison rating for direct replacement use
• Includes pulley and dust cap
• Requires installation tool 91024-1

Product Details

Gates DriveAlign decoupler pulleys are engineered to let the alternator overrun when engine speed drops, which helps isolate vibration in the accessory belt drive system. That action can reduce belt flutter, lower stress on related components, and support smoother engine operation. This Gates 37013P alternator decoupler pulley is a direct-fit replacement for a range of Audi and Volkswagen applications, including Audi A3, Audi TT Quattro, Volkswagen Golf, Volkswagen Jetta, and Volkswagen Passat models.

This part cross-references Dayco 892010 for the same application.

Common Problems This Part Can Address

• Belt vibration or chatter during deceleration
• Alternator pulley noise from a worn one-way clutch
• Accessory drive harshness in the charging system
• Premature wear on the serpentine belt and related components
• Charging system instability caused by a failing decoupler pulley

Installation Notes and Fitment

Fits 2015 Audi Q3, N/A. Fits 2013-2015 Audi Q3 Quattro, N/A. Fits 2009-2015 Audi TTS Quattro, N/A. Fits 2010-2013 Audi A3, N/A. Fits 2006-2008 Audi A3, N/A. Fits 1998-2004 Audi A3, N/A. Fits 2006-2009 Audi A3 Quattro, N/A. Fits 2012-2013 Audi TT Quattro, N/A. Fits 2009 Audi TT Quattro, N/A. Fits 2000-2007 Audi TT Quattro, N/A. Fits 1999-2008 Audi TT, N/A. Fits 2015 Volkswagen CC, N/A. Fits 2011-2015 Volkswagen Clasico, N/A. Fits 2010-2015 Volkswagen Golf, N/A. Fits 2000-2001 Volkswagen Golf, N/A. Fits 2015 Volkswagen Golf SportWagen, N/A. Fits 2008-2015 Volkswagen Jetta, N/A. Fits 2005 Volkswagen Jetta, N/A. Fits 2014-2015 Volkswagen Vento, N/A. Fits 2013-2014 Volkswagen Beetle, N/A. Fits 1999-2001 Volkswagen Beetle, N/A. Fits 2012-2014 Volkswagen Passat, N/A. Fits 2006-2008 Volkswagen Passat, N/A. Fits 2012-2013 Volkswagen Golf R, N/A. Fits 2008-2010 Volkswagen Bora, N/A. Fits 2007-2010 Volkswagen Golf City, N/A, W/140A. Alt. Fits 2007-2009 Volkswagen Eos, N/A. Fits 2007-2009 Volkswagen GTI, N/A, W/140A. Alt. Fits 2009 Volkswagen Jetta City, N/A, Eng. Designation BPY. Fits 2007 Volkswagen Golf, N/A, W/140A. Alt. Fits 2002-2006 Volkswagen Beetle, N/A, Alt. OEM Part No. 038903023(K, L, Q, R or S), 028903029G, 028903028E, 03890301(8 or 8B). Fits 2002-2006 Volkswagen Golf, N/A, Alt. OEM Part No. 038903023S, 028903028E, 028903029G. Fits 1999-2005 Volkswagen Jetta, N/A, Alt. OEM Part No. 038903023(K, L, Q, R or S), 028903029G, 028903028E, 03890301(8 or 8B). Fits 2002-2003 Volkswagen Beetle, N/A, Alt. OEM Part No. 038903023S, 028903028E, 028903029G. Fits 1998-2001 Volkswagen Beetle, N/A, Alt. OEM Part No. 037903025C, 028903028E. Fits 2000-2001 Volkswagen Golf, N/A, Alt. OEM Part No. 028903028E, 038903023K, 038903023L. Fits 1999-2001 Volkswagen Jetta, N/A, Alt. OEM Part No. 038903023S, 028903028E, 028903029G.

Use the required installation tool 91024-1 for proper removal and installation. Verify alternator type and OE reference before ordering, especially on Audi A3, Audi TT Quattro, and Volkswagen Golf/Jetta applications with specific alternator notes.

Quality Assurance

Gates DriveAlign decoupler pulleys are built to OE Exact standards for direct replacement service in the accessory drive system. The design follows the brand’s alternator decoupler pulley specification for controlled overrunning operation and vibration isolation.