ZF 4651.125.009 INDUCTIVE SENSOR for WG100 | OEM Genuine Part

Overview

The ZF 4651.125.009 INDUCTIVE SENSOR is a critical electronic component engineered for the WG 100 series transmission family. This OEM genuine part monitors rotational speed and position of the transmission output shaft, sending precise signals to the control unit for optimal gear engagement and shift timing. Installed directly into the TRANSMISSION HOUSING, the sensor detects ferrous targets without physical contact, ensuring reliable performance in high-vibration environments. The SKU 4651.125.009 is the exact replacement for factory-installed units, guaranteeing seamless integration with your ZF drivetrain.

Symptoms of Failure

• Erratic shifting or gear hunting: When the inductive sensor fails, the transmission control module receives inconsistent speed data, causing delayed or harsh shifts, especially under load.
• Transmission stuck in limp mode: A faulty sensor often triggers a fault code, forcing the gearbox into a reduced-power state to prevent damage.
• No speedometer reading: Since the sensor provides vehicle speed input, a worn unit may result in a dead speedometer or inaccurate readings on the dashboard.
• Intermittent loss of torque converter lockup: The sensor’s degraded signal can prevent the torque converter from locking, reducing fuel efficiency and generating excess heat.

Technical Specifications

Compatibility

This inductive sensor is designed for the WG 100 series transmissions, including models WG100, WG120, WG150, WG180, and WG200. It also fits select ZF off-highway and marine gearboxes that share the same sensor port geometry. Always verify the mounting boss in your HOUSING or HOUSING assembly before installation.

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