Part Number: 54234. Cracked or lost the original engine coolant reservoir cap?. Engine Coolant Reservoir Cap. This part generally fits Mazda vehicles and includes models such as Protege,Protege5 with the trims of Base Hatchback 4-Door,DX Se dan 4-Door,ES Sedan 4-Door,LX Sedan 4-Door,Mazdaspeed Sedan 4-Door,MP3 Sedan 4-Door,S Sedan 4-Door,SE Sedan 4-Door.
