The R&D Engine Thermostat Kit is designed to lower the engine operating temperature. Engine temperatures on a Sea-Doo 260 engine with performance upgrades can reach 190-195 degrees with the stock cooling system. The R&D Kit changes out the stock thermostat for a new cooler 160 degree thermostat. Cooler engine temperature adds up to a noticeable RPM and top speed gain. Kit comes complete with installation tool. Part Number: Pt. # 663-15010
