Investcorp-backed S&S Truck Parts, a distributor of private label and branded aftermarket truck parts, completed the merger with Midwest Truck & Auto Parts, a provider of aftermarket drivetrain components. Financial terms were not disclosed. "We are extremely excited to bring the S&S Truck and Midwest teams together, two companies with similar values and a commitment to superior customer service. Our combination increases the breadth of our offerings for our customers, fortifies the depth of our workforce and trade partnerships, and ultimately accelerates our ability to grow and deliver a more thorough, modern and effective customer experience. We look forward to working closely with the Midwest team and together becoming an even stronger business as we continue serving our customers," DJ Hoffman, S&S Truck CEO.