HIGH FLOW EXHAUST MANIFOLD AND UPPIPES KIT SILVERADO/SIERRA 6.6L L5P BLACK

Replaces leaking manifolds & up-pipes in 2017-2024 GM 6.6L Duramax L5P. Manifolds are high silicon with molybdenum ductile iron for high-temperature resistance and thermal cycling performance. Up-pipe bellows are aircraft-grade 304 stainless steel with enlarged inner diameter and internal sleeving for increased flow. Engineered to increase power, dependability, maximize flow, lower EGTs, and accelerate turbo spool-up. Ceramic-coating enhances thermal barrier properties, reduces heat absorption, facilitates higher flow, further lowers EGTs, and provides protection against moisture, salt, oil, fuel, and corrosive substances.