Jeep Grand Cherokee 3.0 CRD WK1 Tensioner – Reliable and Affordable Replacement Parts Description The Jeep Grand Cherokee 3.0 CRD WK1 Tensioner is a critical component of the vehicle’s serpentine belt system, which is responsible for ensuring the smooth operation of several essential engine accessories. The serpentine belt drives important components such as the alternator, power steering pump, water pump, and air …