Description
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)