X-TRA Cool Direct-Fit HD Intercooler For 01-05 GM 6.6L Duramax LB7/LLY

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  • Regular price $859.95
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Upgrade the intercooler in your 2001-2005 GM 6.6L Duramax LB7/LLY with the XDP X-TRA Cool Direct-Fit HD Intercooler XD403. Constructed using a much stronger bar and plate core technique for incredible strength and upgraded reliability.

The X-Tra Cool HD Intercoolers are designed to mount in place of your factory equipment using all existing brackets and components, no custom fabrication required!

Direct-Fit Intercooler
The X-TRA Cool Direct-Fit HD Intercooler is specifically designed for an easy installation. No modifications or fabrication needed when installing it in your truck. Simply drop the HD Intercooler in place and re-use all your stock brackets, mounting points, and plumbing.

Stronger Than Stock
The X-TRA Cool Direct-Fit HD Intercooler Features a bar and plate design that is far superior to a traditional tube/fin core. In addition, each unit is 100 percent TIG welded for increased durability and strength over the OEM unit, to ensure it can handle the most extreme situations.

Proven Heavy-Duty
All X-TRA Cool HD Intercoolers are pressure tested and rated to withstand 120+ PSI. They are also backed by XDP's 1-year, unlimited mileage warranty.

Customize It!
Intercoolers ship standard with a high quality black coating. Included in the box is an XDP stencil, so you can paint the iconic 'X' in any color you choose. Whether you want to match the color of your truck, or leave it black for a more sleek look, the choice is yours!


  • Direct-Fit Replacement
  • Durable Bar and Plate Core
  • Pressure Tested and Rated To Withstand 120+ PSI
  • Installs In Factory Location With Factory Components