Alternator 170 AMP 12V 4" Dual Foot Saddle K6 PulleyBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. They install high-reliability bearings, robust rectifier diodes, and improved heat-sinking capabilities on all their alternators to ensure improved system reliability combined with increased charging power.Features: 4" Dual-Foot K6 Serpentine Pulley; 170A; 12V; Case Ground; J-180 Mount; Typical for John Deere, Cummins, & Caterpillar Engines; This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.This 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)