This upgrade kit allows the RX8 cooling system to operate as a closed system using our aluminum tank as an Air Separator Tank (AST). With the semi-translucent reservoir you can see coolant level, no need to open the cap.
A closed cooling system for your RX8 increases efficiency by reducing entrained air in the working coolant system (tiny air bubbles) circulating with the coolant. This improves heat transfer, especially when racing or spirited driving puts demands on the cooling system. Another benefit of removing air from the system is to keep oxidation levels down minimizing common contaminants like rust and corrosion from forming and compromising cooling system efficiency / integrity, and also makes the coolant last longer.
Pettit's Aluminum Coolant Tank will never fail, it fits all RX8 models from 2003 thru 2012.
Kit includes our aluminum tank, semi-translucent reservoir tank, hose, hardware, and installation instructions.
AST Spec. A Kit RX8— Our most comprehensive kit lets you setup a closed cooling system by combining our recovery reservoir with our aluminum tank. In this configuration the aluminum tank works as an Air Separator Tank (AST), reducing entrained air in the system. This kit also features a low level sensor to signal the RX8 dash warning light for low coolant.
AST Spec. B Kit RX8— This kit lets you setup a closed system by combining our recovery reservoir with our aluminum tank. In this configuration our aluminum tank works as an Air Separator Tank (AST), reducing entrained air in the system.
Aluminum Expansion Tank Spec. C Kit RX8— In its simplest configuration, our aluminum coolant tank can be used as an OEM replacement for the original plastic expansion tank, only much stronger!