Compatible with GPI's 12V, 24V, and 115V Pumps Includes bung adapter, fiber union ring gasket, and instruction sheet 2 inch NPT thread GPI Genuine Parts & Accessories are tested and approved for use with GPI fuel transfer pumps and are backed by a 90 day limited manufacturer’s warranty. GPI carries a full line of spare parts and accessories for our pumps and meters. The GPI 110909-1 Bung adapter kit includes one bung adapter, a fiber union ring gasket, and instruction sheet. This part is compatible with 12V, 24V, and 115V GPI pumps.