The JMF Evo 7/8/9 Coolant Overflow replaces your plain, factory coolant overflow and with something that actually looks nice! 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 and a drain plug on the bottom. Installation couldn't be easier, this overflow will bolt right into the factory location with no modifications required at all! Unlike other models these have a tube welded on the inside to help recirculate the coolant back into the system. Available in a brushed finish with your choice of cap color.