LLY Duramax Premium Stock Plus Short Block Engine (2004.5-2005) - Industrial Injection - PDM-LLYSTKSB

Industrial Injection LLY Duramax Premium Stock Plus Short Block Engine (2004.5-2005)
Restore confidence in your 2004.5-2005 LLY Duramax 6.6L with the Industrial Injection Premium Stock Plus Short Block Engine. Designed to eliminate many of the common failure points associated with the factory Duramax platform, this engine combines premium components, precision machining, and proven assembly techniques to deliver exceptional reliability and long-term durability.
Every Premium Stock Plus Short Block is built using the highest quality parts and machining processes available. From the balanced and blueprinted rotating assembly to the keyed crankshaft and camshaft, each engine is meticulously assembled and tested to ensure maximum performance, reliability, and longevity. Whether you're replacing a failed engine or building a dependable daily driver, towing rig, or work truck, this short block provides a solid foundation built to last.
Key Features
Balanced and blueprinted rotating assembly
Sim tested short block
Industrial Injection X Series coated, chamfered, and de-lipped pistons
Balanced and keyed OEM Duramax crankshaft
ARP main bolts installed
Balanced OEM Duramax connecting rods
ARP rod bolts installed
Keyed Duramax camshaft
Pinned oil pump
New water pump
OE oil pickup tube
Stock oil pan included
Built for maximum durability and long-term reliability
Premium Stock Plus Engine Construction
Every Industrial Injection Premium Stock Plus Short Block is precision machined, balanced, and assembled to exacting specifications. The rotating assembly is carefully balanced and blueprinted to ensure smooth operation and consistent performance throughout the engine's lifespan.
Industrial Injection X Series coated, chamfered, and de-lipped pistons help improve durability while reducing stress concentrations commonly found in factory piston designs. Combined with a keyed crankshaft, keyed camshaft, pinned oil pump, and premium ARP fasteners, this engine is engineered to provide exceptional reliability in both stock and mild performance applications.
Each completed short block undergoes simulation testing and rigorous quality control procedures before leaving our facility.
What's Included
Fully assembled LLY Duramax short block
Industrial Injection X Series coated, chamfered, and de-lipped pistons
Balanced and keyed OEM Duramax crankshaft
Balanced OEM Duramax connecting rods
ARP main bolts
ARP rod bolts
Keyed camshaft
Pinned oil pump
New water pump
OE oil pickup tube
Stock oil pan
Not Included
Additional assembly gaskets
Fuel system components
Turbocharger components
Oil cooler
Break-in oil
Vehicle Fitment
2004.5-2005 GM Duramax LLY 6.6L
Chevrolet Silverado 2500HD
Chevrolet Silverado 3500HD
GMC Sierra 2500HD
GMC Sierra 3500HD
Why Choose the Industrial Injection Premium Stock Plus Short Block?
Designed to address common Duramax engine failures
Premium machining and assembly processes
Balanced and blueprinted rotating assembly
Upgraded X Series piston technology
ARP fasteners throughout critical engine components
Built using proven Industrial Injection engine-building expertise
Ideal for stock replacement, towing, and work truck applications
Engineered for maximum reliability and long service life
Warranty Information
This engine is backed by Industrial Injection's 2-Year Warranty .
For proper engine break-in, Industrial Injection recommends using Driven Racing Oil (Joe Gibbs) Break-In Oil for the first 300-500 miles of operation. Break-in oil is not included with the engine.