Synapse Auto Instrument Cluster 03-06 GMC 2500/3500 Automatic Select Fitment:2004 GMC / Chevy 6.6L Duramax LB7 this is a must-have for

this is a must-have for any Cummins owner

Upgrade your turbo for reduced EGT's and faster spool up  with the drop in KC 13 Blade Turbine Wheel

they also applied another coating to protect the lens against yellowing and oxidation

which in turn will lower exhaust gas temperatures and give you a slight horsepower increase

Synapse Auto Instrument Cluster 03-06 GMC 2500/3500 Automatic Select Fitment:2004 GMC / Chevy 6.6L Duramax LB7 this is a must-have forThis cluster exchange service offers a completely rebuilt and pre programmed replacement instrument cluster for GM Chevy vehicles. These instrument clusters have a common problem with the gauges sticking, giving incorrect readings, or not working. We refurbish the entire cluster, replacing not only the components of the faulty gauge but rebuilding ALL of the gauges with upgraded components to ensure proper function. All replacement clusters are plug