Turbo Oil Drain Flange 1/2 Npt Adaptor Female Style OIL DRAIN FLANGE ADAPTOR 1/2 NPT -thread size 1/2 npt -fits t3 t4 t3t4 t60 t70 gt32 gt40 t76 (fit almost all oil cooled turbo charger) -bolt to bolt space 50.8mm