Companies

HD Engines is a trusted supplier of new, used, rebuilt, and remanufactured diesel truck engines, serving fleet owners, repair shops, and heavy equipment operators across the United States. With over 25 years of industry experience and an extensive inventory from leading manufacturers, including Cummins, Caterpillar, Detroit Diesel, Volvo, Paccar, International, and more, HD Engines delivers reliable power solutions for commercial, industrial, marine, and off-highway applications. The company is committed to quality, competitive pricing, fast shipping, and expert customer support, helping businesses reduce downtime and keep their equipment operating at peak performance.

JJ Engine Parts supplies dependable truck AC compressor units designed for heavy-duty diesel trucks and commercial vehicles. Built to handle tough working conditions, our compressors help maintain proper cabin cooling and consistent system performance, even during long hauls and extreme temperatures.

We offer both OEM and quality-tested used truck AC compressors, giving customers reliable options for repair and replacement without overspending. Every unit is inspected to ensure proper functionality and durability before it reaches you.

Our inventory supports a wide range of truck makes and diesel engine applications, making it easier to find the right fit without delays. Whether you're fixing a faulty AC system or upgrading for better performance, JJ Engine Parts provides practical solutions backed by experience and fast service.