Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley with Isolated GroundAlternator, 60 Series, 100A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Isolated Ground Hitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: 60-100-SR-IGThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. - cis2:mm5mnJlm -Brochure (pdf)