Mopar is the parts, service and customer care organization within Fiat Chrysler Automobiles. Mopar also designs and builds a small number of customized vehicles. The name derives from a combination of letters from the words "MOtor" and "PARts".
The term was first used by Chrysler in the 1920s and was introduced as a brand starting in 1937. Mopar parts are original equipment manufactured parts for Chrysler vehicles. The term “Mopar” has passed into broader usage among car enthusiasts as an unambiguous reference to the parent company Chrysler Group LLC.