Billet wheel, small frame turbo - Available in journal and ball bearing, T4 or v-band, standard and reverse rotation on 7875 v-band models, T4 1.25AR or V-band 1.28AR exhaust housings. 78x102 Compressor - 82x75 Turbine Compressor housing: 4" V-band atmospheric air inlet & 3" V-band compressor discharge flange Turbine housing: T4 standard mounting, 3" V-band exhaust pipe outlet **must use included restrictor for oil feed line with this turbo.