11-16 Duramax LML SDP Coolant Crossover Pipe KitPRODUCT DESCRIPTION SDP LML Coolant crossover pipe 2011 2016 This is an upgrade to the factory upper coolant hose going to the radiator. We make ours out of 304 Stainless Steel so you can be worry free of rust and deforming as you would get from either steel or aluminum. We can add 1 8"NPT bungs as necessary so that you can monitor temp or pressure with an auxiliary gauge.

Bypass Tube Eliminator - Rear

- Built with same materials as found on Trophy Trucks

4L: +113HP & +141ft-lbs

Heavy duty pushrods (500-750 hp)

their off-the-shelf HOT tune commands around 1400us and is on the verge of draining the rail on a stock CP4-equipped truck

Excessive Cross Brace

both I/C tubes are mandrel bent and powder coated for maximum flow and performance

torque and will boost throttle response

do so before adjusting valves

✅ Why Upgrade to Smeding S300 with Billet Wheels

Laser cut 1/2" flange and 1/4" thick dipstick mounting bracket

Repair a surging or lopey idle with a new fuel pressure regulator