The BD Diesel Exhaust Manifold Cab-Chassis (1045968) is a high-performance upgrade designed specifically for 2013-2018 Cummins 6.7L engines in cab-chassis configurations. Engineered to replace the factory manifold, this BD Diesel component features a heavy-duty, high-silicon ductile iron construction that resists cracking and warping under high heat and pressure. Its pulse-tuned design improves exhaust flow, which can enhance turbo spool-up and overall engine efficiency. The manifold also includes expansion joints that reduce stress caused by thermal expansion, increasing durability and longevity. Ideal for towing and heavy-duty applications, the BD Diesel 1045968 manifold is a reliable solution for maintaining optimal performance and reliability in demanding conditions.