Though no peter fonda, tenneco is still an easy rider, of sorts, in the automotive industry. the auto parts maker designs and distributes ride-control equipment (including shock absorbers, struts, and suspensions) under the monroe brand, and emissions-control systems (catalytic converters, exhaust pipes, and mufflers) under the walker brand. it also makes clevite elastomer products (bushings, mounts, and springs) for vibration control in cars and heavy trucks. it supplies both oems and aftermarket wholesalers and retailers. major customers include gm, ford, advance auto parts, and uni-select. tenneco operates in europe and the americas and is growing its presence in key asia/pacific markets, such as australia.