2015.5-2016 Duramax LML SoCal Turbo Downpipe (500-1044) 2001 - 2004 GM Transmissions & Drivetrains If you have a line

If you have a line pressure booster use the stock application option

giving it that unique 2003 turbo whistle

Rebuilt CP3 High Pressure Common Rail Pump for 6

Adjustable by pass pressure using optional spring

there is less force exerted on the block threads

2015.5-2016 Duramax LML SoCal Turbo Downpipe (500-1044) 2001 - 2004 GM Transmissions & Drivetrains If you have a lineFits 2015. 5 2016 LML applications with 3 bolt flange. 3" diameter 304 stainless steel material for superior thermal qualities. Far superior to 409ss or mild steel. (You wouldn't really use mild steel for a turbo down pipe would you?) Thermal heat wrapped to reduce under hood temperature. Includes new bolts and top lock style nuts.