Thermostatic Switch - Electric Water Pump

The Thermostatic Switch – Electric Water Pump from Moroso is an essential component for any high-performance cooling system upgrade or engine modification project. This intelligent switching device automatically engages and disengages your electric water pump based on coolant temperature, eliminating unnecessary parasitic drag on the engine and improving fuel efficiency during low-load driving conditions. Whether you're building a custom hot rod, converting to an electric pump setup, or optimizing a street performance engine, this thermostat switch provides reliable temperature-responsive control.

As a mechanic familiar with modern cooling system designs, you'll appreciate how this switch operates on a simple but effective principle: it monitors coolant temperature and energizes the electric pump only when thermal demand requires active circulation. This design reduces engine load during idle and cruise phases, where traditional mechanical water pumps waste energy maintaining constant flow. The compact thermostatic switch integrates cleanly into custom cooling layouts and aftermarket electric pump installations, allowing precise temperature calibration to your specific engine's thermal envelope and fuel delivery tune.

Enthusiasts upgrading to electric pump systems—particularly those running LS swaps, EFI conversions, or independent cooling circuits—will find this switch indispensable for achieving the efficiency gains electric cooling promises. Installation pairs seamlessly with most aftermarket electric pump kits, though confirming voltage and amperage compatibility with your specific pump unit is recommended before purchasing. The lightweight design and compact footprint (3.7 x 1.55 x 5 inches) fit easily into constrained engine bays, making it a practical choice for both restomod builds and modern performance platforms seeking thermal management precision.