EGR SYSTEM

BOSTECH EGR654 EGR COOLER 2004.5-2007 GM 6.6L DURAMAX LLY/LBZ (MUST CHECK OE NUMBER) The Bostech EGR654 EGR Cooler addresses the common failure of the EGR Cooler on your 2004.5-2007 GM 6.6L Duramax LLY/LBZ. Bostech has the EGR cooler problem solved. Most...