This fitting bolts to garrett ball bearing GT ball bearing series (and other similar) turbos to drain oil back into the sump (oil return line). Comes with hose tail fitting, gasket and attachment bolts. Mounting bolt holes slotted C-C 38mm to 45mm. Suit the following: GT2554R GT2560R GT2854R GT2860R GT2860RS GT2871R GT2876R GT3071R GT3076R GT3582R