Sinister Diesel EGR Cooler for GM Duramax 2007.5-2010 6.6L LMM

  • Sale
  • Regular price $610

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 each unit to ensure reliability that a stock units can't match.