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1998-2004 Cadillac Seville Expansion Tank - Genuine W0133-1820184
1998, 1999, 2000, 2001, 2002, 2003, and 2004 Cadillac Sevilles may use this OES Genuine expansion tank. This tank is installed on the cooling system to hold coolant that has been warmed from the engine and expanded. A switch inside to trigger a low coolant signal is included in this expansion tank. The dimensions and shape of this expansion tank makes it suitable for use on Cadillac Sevilles made in 1998, 1999, 2000, 2001, 2002, 2003, and 2004. This expansion tank may not fit in other vehicles.