The Eaton Fuller K-4321RX or K4321RX is a remanufactured ECU controller kit designed for automatic transmission control module applications. This kit replaces the transmission electronic control unit and is sold as a complete unit. It falls under Eaton's automatic transmission control module category, covering miscellaneous transmission and clutch parts per NMFC code 121875. If you need help confirming this is the correct controller for your transmission, give us a call before ordering.
A refundable core charge of $350.00 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.
Features
Eaton Fuller part number K-4321RX or K4321RX
Remanufactured ECU controller kit for automatic transmission control
Direct replacement for automatic transmission control module
Sold as a complete kit, one unit per order
Genuine Eaton Fuller part sold by Pro Gear and Transmission
