Actuators and Governors control engine speed by regulating fuel and/or air supply to the engine. Cat® Actuators and Governors are the best choice when you need to repair or rebuild any Cat diesel engine. Our actuators and governors are developed specifically for your Cat engine to maximize available power and fuel economy while protecting the engine. Hardened lever bushings and a large surface area in the metering orifice improve life and accuracy. A large oil supply in the actuators improves reliability. Each unit undergoes extensive testing to ensure performance and reliability. You’ll get the best wear life, fuel economy and overall control, regardless of the equipment it’s powering or the conditions it has to endure.