This Industrial Injection Premium Stock Plus Duramax Short Block is designed to fit 2004.5 - 2005 GM/Chevrolet 2500HD/3500 models with the LLY 6.6L Duramax engine. It eliminates common engine failures of the 6.6L Duramax. Using high - quality parts and top - notch machining processes, it offers industry - leading reliability. The engine build guarantees precision and long - running performance on the road. Key features include a balanced and blue - printed rotating assembly, a sim - tested short block, coated and chamfered de - lipped pistons, and more. Part Number: PDM - LLYSTKSB. Note: It doesn't come with additional assembly gaskets, fuel or turbo components. It requires Joe Gibbs Break - In Oil (not included) for the first 300 - 500 miles.

To use this Duramax short block, first make sure your vehicle is a 2004.5 - 2005 GM/Chevrolet 2500HD/3500 with a LLY 6.6L Duramax engine. Since it doesn't come with additional gaskets for assembly or fuel and turbo components, you'll need to get those separately. When you install it, use Joe Gibbs Break - In Oil for the first 300 - 500 miles. For maintenance, regularly check the oil level using the new oil pump, water pump, and oil cooler. Inspect the balanced and keyed stock Duramax crank, rods, and camshaft periodically. If you notice any unusual noises or performance issues, have it checked by a professional mechanic.