"Coolant Reservoir/Icebox for your 2012-2015 ZL1 supercharger heat exchanger coolant Made of .125 tig welded aluminum with BMR custom flush mounted lid Predrilled for mounting holes - Silicone O ring that won't degrade over time Black Market Racing's reservoir is designed with the return line through the bottom of the reservoir with the outlet via a drilled tube to allow for filtration of ice ...