Our XBK12 size 12 shaft mount reducer bushing kit with a 6-7/16" bore is made from top-grade steel alloys, ensuring durability and a smooth installation process. This size 12 bushing kit is compatible with leading gearbox brands like Dodge TXT1205, TXT1209, TXT1215, and TXT1225. Featuring twin taper bushings, a high-strength full-length key, and premium hardware, this kit provides a comprehensive solution for your size 12 shaft mount reducer. For additional information or to get a quote on our premium size 12 shaft mount gearbox bushing kit with a 6-7/16" bore, contact our customer service team and we will gladly assist you!