You may have heard the term Mopar in reference to classic Dodge and Plymouth cars, but do you know what it really means? What is a Mopar car, and where did this term originate? Back in 1937, the marketing team at Chrysler Motor Parts Corporation was trying to come up with new branding for the replacement parts and accessories it offered for Chrysler, Dodge, Plymouth, and DeSoto vehicles. The words Motor and Parts were combined into Mopar. This catchy term was first used to market a new line of antifreeze, but would later be applied to all of the Chrysler group's official maintenance, repair, and performance parts.