2011-2023 6.6L Duramax Idler Arm Pivot Assembly Forged - 2011 to current 6.6L Duramax (158040111)Description Extreme Duty Forged Idler Pivot Assembly Stock Taper. A failed idler arm pivot assembly can make your steering feel loose and washy. Ultimately, it can contribute to the premature wear of your tires and steering linkage. If your truck is lifted, with larger wheels and tires, this effect can be even more profound. The PPE Extreme Duty Forged Idler Arm Assembly is precision built to handle the stresses of larger tires, off road driving, drag