Important Information – Used ECMs

• Tested & Verified: Good, tested used electrical components.

• Programming Required: Must be flashed to your vehicle’s specific VIN by a dealer or qualified diesel shop before installation.

• Programming Not Included: Buyer is responsible for all programming.

• Return Policy: Electrical components that have been opened, installed, or plugged in are generally non-returnable unless covered under warranty.

240-5302 Used Caterpillar C7/C9 Engine Control Module (ECM)

This used Caterpillar 240-5302 Electronic Engine Control Module (ECM) is designed for compatible CAT C7 and C9 diesel engine applications commonly found in school buses, medium-duty commercial trucks, and other diesel-powered equipment.

The ECM serves as the engine’s electronic control center, monitoring sensor inputs and managing critical operating functions such as fuel injection, engine performance, electronic diagnostics, and emissions-related controls.

A tested used CAT ECM provides a cost-effective alternative to replacing a failed engine computer with a new unit, helping fleet maintenance departments and diesel repair facilities keep vehicles operating without unnecessary replacement costs.

This module must be programmed to the vehicle’s specific VIN and engine configuration before installation. Compatibility should be verified using the original ECM part number, engine serial number, and applicable Caterpillar engine calibration.

Part Specifications

OEM Part Number: 240-5302
Additional OEM Numbers: 240-5302-01, 240-5302-02
Remanufactured Reference Number: 10R-4091
Stock Number: 10E-2405302-STK
Manufacturer: Caterpillar (CAT)
Component Type: Electronic Engine Control Module (ECM)
Condition: Used – Tested
Engine Applications: CAT C7 / CAT C9
Engine Type: Diesel
Programming Required: Yes – VIN-Specific
Programming Included: No
Typical Vehicle Applications: School Buses and Medium-Duty Trucks

Common Applications

This ECM may be compatible with select vehicles and equipment powered by Caterpillar C7 or C9 diesel engines, including:

• Blue Bird School Buses equipped with CAT C7 engines

• Thomas Built School Buses equipped with compatible CAT C7 engines

• Freightliner Medium-Duty Trucks with CAT C7 engines

• International/Navistar Medium-Duty Trucks equipped with compatible CAT engines

• Other commercial diesel applications using CAT C7 or C9 engine control systems

Important Compatibility Note: Not every Caterpillar C7 or C9 engine uses the same ECM. Confirm the original ECM hardware number, engine serial number, emissions configuration, and programming requirements before purchasing.

OEM #CAT: 240-5302-01, 240-5302-02, 10R-4091