AFE BladeRunner Exhaust Manifold & Up-Pipe Kit 01-04 GM 6.6L Duramax LB7 MOG-K7397 5″ systems and they knew

5″ systems and they knew something had to be done

While driving the construction site or trails to your favorite dirt bike location

F and below freezing

of torque and outflows the factory intake by 42%

AFE BladeRunner Exhaust Manifold & Up-Pipe Kit 01-04 GM 6.6L Duramax LB7 MOG-K7397 5″ systems and they knewEliminate exhaust restriction in your LB7 Duramax with the AFE BladeRunner Exhaust Manifold & Up Pipe kit. This kit from AFE outflows the factory exhaust manifolds by 6% by eliminating the factory pinch point of the driver side manifold. The machined ports match the factory gasket openings for maximum flow. Each manifold features an EGT probe port for easy installation of gauges or testing equipment. The up pipes feature a 2" mandrel bent 304