Diesel Electronic Supply

John Deere / Sauer Danfoss MC300 48-Pin ECU & TCU Repair Kit

$100.00

Sale Sold out

Shipping calculated at checkout.

Connector A-30 Pin B-18 Pin

John Deere / Sauer Danfoss MC300 48-Pin ECU & TCU Repair Kit

The John Deere / Sauer Danfoss MC300 48-Pin ECU & TCU Repair Kit repairs damaged harness connectors used with MC300 dual path track controllers and related ECU/TCU systems in John Deere dozers.

If your connector is cut, corroded, or failing, this kit gives you a reliable and cost-effective solution. Instead of replacing the entire wiring harness, you can repair only the damaged section and get the machine back in service faster.

Common Search Terms

If you’re searching for the following, this kit fits your needs:

John Deere dozer ECU connector repair
Sauer Danfoss MC300 connector kit
John Deere 450J ECU harness repair
48-pin TCU connector replacement
Dual path controller harness repair

Compatible John Deere Dozer Models

This repair kit works with several John Deere dozers, including:

John Deere 450J
John Deere 550J
John Deere 650J
John Deere 450H
John Deere 550H
John Deere 650H

These machines use 48-pin ECU or TCU connections tied to Sauer Danfoss MC300 controllers. Because of this, the connector plays a key role in machine operation. In addition, it helps maintain consistent communication between modules. As a result, proper connection improves overall system reliability.

Compatible ECU / TCU Systems

This kit supports a range of John Deere and Sauer Danfoss controllers, such as:

MC300 Dual Path Track Controller
Sauer Danfoss S2X Micro
DC2 Microcontroller
KDC Series Controllers
Dual Path Controllers

It also matches many common part numbers, including but not limited to:
AT453116, 11163395, AT453122, AT300407, AT308928, AT361627, AT300457, AT340391, AT361623, AT304821, AT322362, AT225288, 1091039, 1091098, 11051268, 11050892, 11019544, 1090647, 1090984, 1091077, KDC2001, KDC2079, MCE112A1090G, MCE112A1082G, AT181566. Additionally, these part numbers cover a wide range of real-world applications. For this reason, the kit fits many common repair scenarios.

What’s Included

1 × 18-Position Connector
18 × Pre-crimped wires with contacts (Grey)
1 × 30-Position Connector
30 × Pre-crimped wires with contacts (Blue)

Together, these components complete the full 48-pin connector repair. In other words, you get everything needed for a proper and efficient fix.

Built for Heavy Equipment Applications

A damaged ECU or TCU connector can cause serious issues. For example, you may run into:

Machine communication faults
Track control problems
Engine performance issues
Equipment downtime

Because of this, replacing only the connector helps reduce costs and avoids a full harness replacement. As a result, you can complete repairs faster and return equipment to service. Furthermore, this approach keeps your repair simple and efficient. At the same time, it reduces unnecessary parts replacement.