New Universal Products Tractor 3 3/4" X 48" Straight Pipe W/ ClampOne New Aftermarket Replacement Straight Exhaust Stack Pipe with Clamp Universal Fit Tractor This aftermarket replacement straight exhaust stack pipe is a vertical exhaust pipe used to route combustion gases away from the engine and upward through or above the hood on agricultural tractors. The pipe includes a clamp for secure installation. Sized to fit a wide range of tractor makes and models, it is a direct dimensional replacement for worn, rusted,