HSP Ceramic Coated Cast Manifolds 2001-2016 Duramax requires-vin 7% less restrictive than stock

7% less restrictive than stock

Made from 10AN Nylon Braided hose

As the rpm limits have been pushed higher and higher

and better seals for less deflection and longer life

282-HSP-RAW

HSP Ceramic Coated Cast Manifolds 2001-2016 Duramax requires-vin 7% less restrictive than stockHSP Ceramic Coated Cast Manifolds 2001 2016 Duramax Why Would You Need the HSP Diesel Coated Billet Manifolds? The factory manifolds are restrictive from the get go. HSP Diesel noticed quickly that these needed to be addressed if you wanted to make more power. The factory manifolds are also known to fail due to cracks, warping, and broken bolts. The HSP Diesel Manifolds address all of these issues while looking better and adding power. What do the HSP