The Eaton Fuller K-4321 or K4321 is a complete ECU Assembly Kit (LSE) for Fuller automated transmissions. The kit ships as a single unit and includes a Gen 3 ECU assembly (part 4309016), a transmission application software assembly (part 5570052), 16-speed Direct B LSE configuration software (part 5582115), two nut assembly sets (parts 4305870 and 4305919, three of each), and two instruction letters for installation guidance. The LSE designation indicates this kit is calibrated for the Low-Shift Energy architecture used in select Fuller automated transmission models. Call us to confirm proper fit for your specific transmission application.
4305870 | Nut Assembly | Qty 3
4305919 | Nut Assembly | Qty 3
4309016 | ECU Assembly, Gen 3 | Qty 1
5570052 | Software Assembly, Transmission Application (Gen 3) | Qty 1
5582115 | Software, Configuration, 16-Speed Direct B, LSE | Qty 1
L-2005-10 | Instruction Letter | Qty 1
L-2008-07 | Instruction Letter | Qty 1
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
ECU Assembly Kit (LSE) for Fuller automated transmissions
Includes Gen 3 ECU Assembly (Eaton part 4309016)
Includes transmission application software assembly (part 5570052)
Includes 16-speed Direct B LSE configuration software (part 5582115)
Hardware pack: two nut assembly part numbers (4305870 and 4305919), three of each
Comes with two installation instruction letters (L-2005-10 and L-2008-07)
Sold as a complete kit, one unit
Additional Information
Kit BOM - K-4321 ECU Assembly Kit (LSE):4305870 | Nut Assembly | Qty 3
4305919 | Nut Assembly | Qty 3
4309016 | ECU Assembly, Gen 3 | Qty 1
5570052 | Software Assembly, Transmission Application (Gen 3) | Qty 1
5582115 | Software, Configuration, 16-Speed Direct B, LSE | Qty 1
L-2005-10 | Instruction Letter | Qty 1
L-2008-07 | Instruction Letter | Qty 1
