aFe BladeRunner 3in/3-1/2in Black Intercooler Tubes Hot/Cold 2017 GM Diesel Trucks V8 6.6L (td) L5PaFe BladeRunner 3in 3 1 2in Black Intercooler Tubes Hot Cold 2017 GM Diesel Trucks V8 6. 6L (td) L5P This BladeRunner intercooler tube kit delivers more flow and is more robust to handle higher horsepower and boost than the factory intercooler tubes on the 2017 2019 GM L5P diesel. TIG welded and designed from aircraft grade, mandrel bent aluminum tubing, the BladeRunner I C tube kit features factory mounting locations, quality hardware and 5 ply