Charger / Challenger / 300 3.6L 185 Degree Thermostat + housing (Supercharged)RIPP 185 Degree Thermostat + Housing for Supercharged Vehicles An efficient cooling system is essential for your supercharged 3. 6L V6 engine. The RIPP thermostat increases the efficiency of your engine's cooling system by opening up at 185F, compared to your vehicle's standard thermostat, which opens at 210F. This allows coolant to flow through sooner, helping to reduce and maintain cooler temperatures in the engine. This is also a great addition to