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Engines and Components› Engines, Blocks and Components
D&J Precision Machine
D&J Long Block Engine 04.5-07 Ram 5.9L Cummins
SKU: BD-DJPLB100014
Professional / shop required
Overview
This long block features heavy-duty internals, new pistons, bearings, tappets, an oil cooler, and an oil pump for durability. The D&J Precision Plus Reman Cylinder Head includes oversized valve seats, HD bronze guides, and a CNC high-performance valve job for improved airflow and efficiency.
Fully assembled and pre-lubed, the engine comes with an oil pan and front cover, ready for installation. It aims to provide a tight, responsive, and dependable feel for your Cummins.
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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!
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | D&J Precision Machine |
| Part Number | BD-DJPLB100014 |
| Category | Engine Components |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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