Rev9Power Rev9_AC-022; T3, T3/T4, T04 Turbo Oil Drain Flange; 1/2 NPT Adaptor aluminum t6061 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