2001-2023 GM 6.6L Duramax 304 Stainless Steel Coolant Tube Pump to Oil Cooler PPE Diesel

1.75 Inch Coolant Drain Tube Stainless Steel W/ 1/4 Inchnpt Bung PPE Diesel

2001-2004 GM 6.6L Duramax Thermostat Housing Cover Raw PPE Diesel

2001-2004 GM 6.6L Duramax Thermostat Housing Cover Polished PPE Diesel

Coolant Bypass Tube - Water Pump to Thermostat Housing 2011-2016 GM 6.6L Duramax LML Pacific Performance Engineering