It is a gas-powered engine with a voltage of 12V and is compatible with both the Quest E and S Series mowers. This engine motor is an ideal replacement for your worn-out mower engine. It is easy to install and has a long lifespan, ensuring that your mower runs smoothly for years to come. CAME OFF AN EXMARK QUEST ZERO TURN MOWER. Part is from a used vehicle; some parts may have been replaced without our knowledge.