To start the HSP Diesel Coated Billet Manifolds are machined from 1018 steel. This means you have the maximum flow due to a more open port design increasing the flowability of the exhaust and the common flow restriction that is found in the driver’s side manifold. The design of the HSP Diesel Coated Billet Manifolds is also low profile meaning that you get some extra room if you need to worry about the custom routing of parts. The HSP Diesel Coated Billet Manifolds work with factory-style Up-pipes and come ceramic coated for superior heat protection that is good up to 2000 degrees.
Engine code is dictated by the 8th character of the VIN number. The 10th character is the year of the truck.
At HSP we believe in our products and we stand firmly behind every single one that leaves our facility. For years we have taken care of almost everything & anything that our customers had issues with, but we didn’t have a “set in stone” warranty. We have always gone above and beyond for our customers which set us apart from the rest. We will continue that same standard, but now we are taking things to the next level. Below you will be able to clearly read & understand our “No BS” warranty, its process, and the guidelines in which to follow.