Fitment Information

• Chevrolet Silverado 1500 / 2500 / 3500 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec (1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
• Chevrolet Tahoe 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec (1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
• Chevrolet Suburban 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec (1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
• Chevrolet Avalanche 4.8L, 5.3L V8 Vortec (2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
• GMC Yukon / Yukon XL / Yukon Denali 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec (1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
• Cadillac Escalade / Escalade EXT / Escalade ESV 5.3L, 6.0L, 6.2L V8 Vortec (2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011)
• Hummer H2 6.0L V8 Vortec (2003, 2004, 2005, 2006, 2007, 2008, 2009)

Fitment Note: Gas V8 Vortec engines only. Does not fit diesel applications. Requires the factory GM alternator and power steering pump bracket (GM part number 12554030) to be in place. If this factory bracket has been removed or replaced with an aftermarket unit, this kit may not install correctly. The included serpentine belt is sized for stock alternator pulleys. If smaller-than-stock alternator pulleys are installed, the included belt will not fit and a custom-length belt will need to be sourced separately. This listing is for the bracket kit only and does not include an alternator. 

Maximize your vehicle’s charging capacity with the JS Alternators Dual Alternator Bracket Kit, designed for 1999-2013 Chevy models with 4.8L, 5.3L, 6.0L, and 6.2L V8 Vortec engines. This precision-engineered bracket allows you to mount a second alternator, providing increased power output for high-performance applications like car audio systems, off-road setups, fleet vehicles, and heavy-duty electrical demands.

What’s Included in the Kit:

• Idler Pulley (76mm)
  
• 3 Long Bolts
  
• 2 Medium Bolts
  
• 1 Short Bolt
  
• 7 Washers
  
• 2 Nuts
  
• Serpentine Belt

Kit includes the dual alternator bracket, 76mm idler pulley, all mounting hardware, and a serpentine belt. Designed for high electrical demand applications including competition car audio, off-road builds with winches or auxiliary lighting, fleet vehicles, and any build requiring substantially more charging capacity than the factory single-alternator system provides. Backed by a lifetime warranty on alternator labor and a 1-year warranty on parts.