The Sinister Diesel Hot Side Charge Pipe for the Powerstroke 7.3L replaces the stock, restrictive piping that connects the intercooler to your engine. This upgraded pipe is larger in diameter and has smooth mandrel bends to increase air flow velocity to improve power and lower EGTs. The Sinister Diesel Hot Side Charge Pipe is also more durable, being made from 6061 Aluminum alloy and connected with Sinister Diesel's 4-ply silicone boots that are rated up to 400psi. Our Intercooler Pipes are masterfully back-purge TIG welded and finished in polished powdercoated Sinister Blue for a beautiful under-hood look.