Steeda's Blower Belt Tensioner for Shelby GT500 creates more belt wrap around blower pulley for less belt slip with smaller pulleys and higher boost applications. Rather than just being a stationary idler like competitors designs, Steeda's kit is a true adjustable tensioner allowing you to set the proper tension regardless of pulley size. Comes with a billet aluminum pulley, all hardware and bracket to mount to engine. Fits 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 GT500 555-3354$262.95 www.realspeedauto.com Ph.631-563-7325 All parts listed are for the Ford Mustang unless otherwise noted. Copyright 2018 Realspeed Automotive Inc. All rights reserved.