D&J Long Block Engine 04.5-07 Ram 5.9L Cummins

Remember that moment when your old 5.9L Cummins wouldn’t fire like it used to, or struggled under a heavy load? The Precision Plus Long Block brings that feeling back, giving your Ram the reliable, ready-to-run power it deserves. CNC blueprinted and precision-machined, this engine runs smoother, tighter, and stronger the instant you hit the throttle.

Built with heavy-duty internals, new pistons, bearings, tappets, an oil cooler, and an oil pump, this long block is designed to handle the workday without breaking a sweat. The D&J Precision Plus Reman Cylinder Head features oversized valve seats, HD bronze guides, and a CNC high-performance valve job to keep airflow smooth and efficiency high mile after mile.

Fully assembled and pre-lubed with break-in oil, the engine comes with an oil pan and front cover for easy installation. If you want your 5.9L Cummins to feel tight, responsive, and dependable again, this Precision Plus Long Block is ready to get back to work!