S&S Truck Parts, LLC. is an independent distributor of new aftermarket parts and components for medium- and heavy-duty trucks, with an expanded selection for light-duty automotive applications. The company offers more than 30,000 parts for over 1,000 vehicle models and applications, including drivetrain components, transmissions, axles, brakes, air systems, cooling parts, bearings, seals, suspension, and related tools and lubricants. Its product portfolio includes brands such as Newstar, World American, Motive Gear, TEN Factory, Richmond Gear, and PowerTrax.

S&S supports distributors and dealers with eight product distribution centers in North America and a network spanning 67 countries. Its services include nationwide warehouse fulfillment with one-to-two-day shipping across the continental United States, private-label capabilities, purchasing system integrations, and third-party drop shipping. The company also provides U.S.-based customer service by phone and email on weekdays. A quality control laboratory at its Schaumburg, Illinois headquarters inspects products using advanced equipment. With more than 60 years of service to heavy-duty truck dealers, S&S combines broad parts availability with distribution and business support.