ARCO Marine Original Equipment Quality Replacement Solenoid f/Mercruiser Mercury & Yamaha 4 Stroke - 12V Isolated Base One Size. Replaces:MERCURY 89-818999A1MERCURY 89-818999A2MERCURY 89-850188A1MERCURY 89-850188T1YAMAHA 65W-81941-00SIERRA 18-5820ARCO Assurance 12-month part and labor warranty protectionThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications for ARCO Marine Original Equipment Quality Replacement Solenoid f/Mercruiser Mercury & Yamaha 4 Stroke: Manufacturer: ARCO Marine Application: Outdoor Color: Black Package Contents: ARCO Marine Original Equipment Quality Replacement Solenoid f/Mercruiser Mercury & Yamaha 4 Stroke ARCO Marine SW099: Original Equipment Quality Replacement Solenoid f/Mercruiser Mercury & Yamaha 4 Stroke - 12V Isolated Base One Size