Sinister Diesel SD-6.6EGRC04.5-BLU - EGR Cooler for GM Duramax 2004.5-2005 6.6L LLY; Blue.

This item is not for sale in the State of California., Sinister Diesel has reinvented the Exhaust Gas Recirculation (EGR) cooler with this great new model for the 6.6L LLY Duramax diesel engine with the same fit as the factory GM unit. When the internal brazing cracks and fails in the factory EGR Cooler it will allow coolant to be sucked into the intake manifold. From the manifold it enters the combustion chamber and usually results in a blown head gasket or hydro-locked motor with a costly repair bill for thousands of dollars! If you're tired of clogs and the possibility of a catastrophic failure with the stock 6.6L LLY Duramax EGR cooler, or if you just want to prevent future headaches from unnecessary maintenance, protect your investment in your truck with an upgraded Duramax EGR cooler from Sinister Diesel. Instead of the narrow internal cooling fins with brazed connections, we assemble each 6.6L LLY Duramax EGR cooler using high-flow stainless steel tubing with quality TIG welds and then pressure-test