Tenneco’s history as a stand-alone entity began in 1999, when the current company emerged from a conglomerate formerly consisting of six businesses -- shipbuilding, packaging, farm and construction equipment, gas transmission, automotive and chemicals. Through various public offerings, sales, spin-offs and mergers beginning in the 1980s, the company divested all of its businesses, leaving Tenneco Automotive as the remaining part of the original company. The automotive entities that remained, including a strong original equipment business and legendary aftermarket brands like Monroe and Walker, each with historic roots reaching back more than 100 years, showcase a rich history that helps define Tenneco today.