View 2 Photos View 0 Videos Mack 6723 Input Shaft Drive Gear, Part # 764KB3264A $192.40 USD NEW INPUT SHAFT DRIVE GEAR FOR MACK TRANSMISSION, (764KB3264A), 6723, SE876 ConditionNewStock Number6723 MLS Number13374487CategoryTransmission Parts Last Updated3/21/2026 LocationCrandall, TX, US Sold ByTim Jordan's Truck Parts Inc. (833) 359-___ SHOWNUMBERCall Seller Email Seller Save More Info