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Get rid of the plain factory coolant overflow and replace it with something that actually looks nice! This high quality piece has it all, made from 6061 aluminum it measures in at 6" tall by 4" round. Overall capacity is around 1 pint which makes it NHRA legal. The overflow features a sight glass on the side to check the level, a drain plug on the bottom, and best of all your choice of 4 colored CNC machined caps. Installation couldn't be easier, this overflow will bolt right into the factory location with no modifications required at all!