The more information you have on your engine's performance, the better. Our Mercury Monarch oil temperature gauges will give you another parameter with which to monitor how your engine is doing at all times. High oil temperature can be fatal to an engine, so a new Mercury Monarch oil temperature gauge will help ensure that your oil cooler system is operating at maximum efficiency. Mercury Monarch oil temperature gauges include a temperature sensor and mounting hardware.

Mercury Monarch Oil Temperature Gauges Page 3