Granatelli Motor Sports - Thermostats High Flow

Granatelli Motor Sports high‑flow thermostats, featured on this page, are engineered to optimize engine cooling performance for LS, LT, and Dodge Hemi platforms, helping your vehicle run cooler, more efficiently, and with improved reliability under demanding conditions. By increasing coolant flow and maintaining more consistent operating temperatures, these thermostats can enhance throttle response, reduce heat‑soak, and support overall engine longevity. If you’ve noticed fluctuating temperature readings, overheating, poor heater performance, or a check‑engine light related to coolant temperature, it may be a sign that your factory thermostat is sticking or failing. Upgrading to a Granatelli high‑flow thermostat provides a simple, effective way to restore proper cooling and unlock better performance for your engine.