BD Diesel DJPLB100016 Street Performance Long Block Engine | 2004.5-2007 Ram 5.9L Cummins

Features:

• Rated for up to 1000 HP
• Designed for street and competition builds
• D&J X-Beam billet connecting rods
• Fire-ringed cylinder head for superior sealing
• 5-axis CNC-ported high-performance head
• HD bronze valve guides for increased durability
• Oversized intake and exhaust valve seats
• Custom ARP 9/16" head studs included
• Fully assembled and pre-lubed for easy install
• Includes oil pan, front cover, and rocker box
• Precision balanced and CNC-machined for reliability

High-Performance Long Block Engine for 5.9L Cummins

When you're pushing your 5.9L Cummins past stock power levels, a factory engine just won’t cut it. High boost, aggressive fueling, and hard launches put extreme stress on stock internals, and sooner or later, weak points start to show. Whether you’re building a street-driven powerhouse or a weekend competition truck, the BD Diesel Street Performance Long Block gives you the strength, airflow, and durability needed to handle serious horsepower. Instead of gambling on a rebuild, this fully assembled long block gives you a fresh start with upgraded components designed for high-performance applications. At the heart of this build are D&J X-Beam billet connecting rods. Unlike stock rods that can bend or break under high stress, these billet units are engineered to handle extreme cylinder pressures, making them ideal for high-horsepower street and competition setups. When you’re running big injectors, aggressive tuning, and high RPMs, these rods provide the confidence you need to push your truck to its limits.

Heavy-Duty Componentns and Hardware

A major weak point in factory Cummins engines is head gasket failure under high boost. This long block solves that issue with a fire-ringed cylinder head and custom-machined grooves for superior head-to-block sealing. Combined with ARP 9/16” head studs, this setup prevents head lift, ensuring a tight, secure seal even under extreme boost conditions. If you're running compounds or a large single turbo, this is exactly the kind of reinforcement your engine needs. Every component in this long block is precision-machined and fully blueprinted for maximum reliability. It’s balanced to exact tolerances to ensure smooth operation at high RPMs, reducing stress on rotating components and extending engine life. Unlike stock rebuilds that often come with used or questionable parts, this engine includes all-new internals, including pistons, bearings, tappets, and an upgraded oiling system for added longevity.

High-Quality Construction with Drop-In Install

Beyond durability, this engine is built for maximum efficiency and power. The included Stage 1 High-Performance Cylinder Head is 5-axis CNC-ported to increase airflow, allowing the engine to breathe better at high RPMs. It also features heavy-duty bronze valve guides and oversized intake and exhaust seats to improve longevity and maintain precise valve operation. More airflow means better throttle response, improved fuel atomization, and lower exhaust gas temperatures, all of which contribute to a more efficient and powerful engine. For a hassle-free installation, this long block comes fully assembled and pre-lubed with break-in oil. It includes an oil pan, front timing cover, and machined rocker box, so there’s no need to source additional components. Designed as a direct replacement for 2004.5-2007 Ram 5.9L Cummins trucks, this engine is built to bolt right in, making the swap as seamless as possible.

Fits: 2004.5, 2005, 2006, 2007 Dodge / Ram 5.9L Cummins

Core Charge: Refundable Core Charge of $3000 applies.

Note: Not for sale on licensed California vehicles