Compatible Replacement ECM Control Board for Genie Boom Lift – OEM No. 121765 / 121765GT

🟦 Product Overview

This is an aftermarket replacement ECM control board (ALC500 electronic module) designed for Genie boom lifts and aerial work platforms.

It replaces:

👉 OEM No. 121765 / 121765GT

This control board is responsible for machine electronic logic control, safety interlocks, and system communication.

⚠️ Important Before Ordering

To ensure correct compatibility, please confirm:

• Machine model
• Serial number
• OEM part number
• Old ECM board photo
• Software/program version (if available)

🟩 Product Specifications

🟨 Product Description

The Genie 121765GT ECM control board is a key electronic module used in aerial work platforms equipped with the ALC500 control system.

It acts as the central processing unit of the machine, controlling:

• Machine startup logic
• Safety interlock system
• Hydraulic and motion commands
• Communication between platform and ground controls

This aftermarket replacement ECM is widely used for:

• Electrical failure repair
• Fleet maintenance
• Rental machine refurbishment
• Control system replacement

⚠️ Some models require programming by serial number after installation, depending on machine configuration.

🟥 Compatibility Notice

This product replaces:

👉 121765 / 121765GT

Compatible machine models may include:

• Genie Z-45/25
• Z-45/25 IC / Z-45/25J
• Z-60/34
• Z-80/60
• S-40 / S-45
• S-60 / S-60XC
• S-65 / S-65TRAX
• S-80 / S-85 (selected configurations)

⚠️ Compatibility depends on:

• Serial number range
• Software version
• Machine configuration
• ALC500 system calibration