40mm to 1 1/2 inch conversion kit 40mm to 48mm intake adapter 40mm to 47mm intake manifold 40mm to 48mm intake manifold 40mm to 3m adapter 40mm torx socket 40mm to 48mm intake manifold adapter 40mm to 32mm reducer 40mm to bayonet adapter 40mm to 1-1/4" metric to standard pvc union - slip x slip