Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator & Temp Sensor. Kit Includes: a 60-100-K6 Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware. 60-100-K6 Alternator: 100A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Isolated Ground Hitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre Engines. Replaces: 60-YP-MC-100-SR-KIT. Product includes regulator and temperature sensor and all mounting hardware. Package dimensions: 14 x 11 x 10 inches; Package weight: 8.6 pounds. NOTE: This product may not be returned to the original point of purchase — please contact the manufacturer directly with any issues or concerns.