Balmar Alternator 170 AMP Kit 12V 4in Dual Foot Saddle K6 Pulley One Size. 15in K6 Serpentine Pulley Case GroundHitachi-Style Mounting; Typical for Yanmar Westerbeke Lehman & Perkins-Sabre EnginesReplaces: AT-DF-MC-200-KIT AT-DF-200-K6-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications for Balmar Alternator 170 AMP Kit 12V 4in Dual Foot Saddle K6 Pulley: Manufacturer: Balmar Application: Outdoor Color: Red Package Contents: Balmar Alternator 170 AMP Kit 12V 4in Dual Foot Saddle K6 Pulley Balmar XT-DF4-170-K6: Alternator 170 AMP Kit 12V 4in Dual Foot Saddle K6 Pulley One Size