C484 The Monroe 66456 Magnum Rear Suspension Shock Absorber is designed for specific use on 2007-2011 Workhorse W42 vehicles. Made in the United States, this shock absorber is of high quality and ensures smooth and controlled suspension performance. With an item length of 23.300 inches, this rear shock absorber is a reliable and durable component to maintain the stability and comfort of your vehicle while driving.