Industrial Injection 5.9 Cummins Common Rail Stock Long Block Engine (2003-2004)

The Industrial Injection 5.9 Cummins Stock Long Block Engine is built for customers looking for a reliable, high-quality replacement engine for their 2003-2004 Dodge Ram Cummins. Combining precision machining, premium components, and over 40 years of diesel engine expertise, this long block is designed to deliver dependable performance, durability, and long service life.

Every engine features a balanced rotating assembly and a Sim-tested short block to ensure smooth operation and maximum reliability. We utilize Industrial Injection X Series Stock Pistons, balanced Cummins connecting rods and crankshaft, a reground Cummins camshaft, and all-new bearings, tappets, oil pump, and oil cooler components.

The engine is topped with our Premium Stock Plus Cylinder Head featuring stainless steel nitride-coated valves, oversized high-temperature valve seats, hardened alloy valve guides, and new valve springs for superior durability and performance.

Whether you're replacing a worn-out engine or restoring your truck to factory performance, this long block is built to meet or exceed OEM standards.

Features:

• Balanced rotating assembly
• Sim-tested short block
• Industrial Injection X Series Stock Pistons
• Balanced Cummins crankshaft and connecting rods
• Reground Cummins camshaft
• New main and rod bearings
• New tappets
• New oil pump and oil cooler
• Cummins oil pickup tube
• Big Iron oil pan
• Premium Stock Plus cylinder head
• Stainless steel nitride-coated valves
• Oversized high-temperature valve seats
• Hardened alloy valve guides
• New valve springs
• Factory-style head bolts included

Benefits:

• Reliable stock replacement for 2003-2004 5.9 Cummins engines
• Built using premium components and precision machining
• Improved durability and long-term reliability
• Balanced for smooth engine operation
• Designed for daily driving, towing, and work truck applications
• Backed by a 2-Year Unlimited Mileage Warranty

Warranty:

• 2-Year Unlimited Mileage Warranty

Important Notes:

• Valve cover not included
• Rocker arms and pushrods not included
• Additional assembly gaskets not included
• Water pump not included
• Engines are painted Cummins Black
• Recommended break-in oil: Driven Racing Oil / Joe Gibbs Break-In Oil for the first 300-500 miles (not included)