Replacement radiator coolant bottle tank with cap for 1995–2003 Protege and 2002–2003 Protege5.Compatible with models including Protege DX, ES, LX, SE, Base, and Protege5 Base.Also fits 1995 323 Base 2-Door, 2001 Protege MP3, 2003 Protege Mazdaspeed, and 1995 Protege S.Designed to replace OE part number B6BF15350B (also referenced as B6BF-15-350B, B6BF15350, ZL0115350A, B6BF15350A, B6BF 15 350B, B6BF 15 350, ZL01 15 350A, B6BF 15 350A, 603507, 603 507, FRT2101C, MA3014102).Functions as a pressurized coolant reservoir, overflow tank, engine coolant bottle, coolant expansion recovery tank, or radiator overflow assembly.Made of plastic.Sold individually.