ZF 0501.337.904 SPEED SENSOR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 0501.337.904 SPEED SENSOR is a critical electronic component designed for precise rotational speed monitoring within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part mounts directly into the transmission housing, where it detects gear or shaft velocity and relays real-time data to the control unit. The SKU 0501.337.904 ensures accurate signal output for proper shift timing and clutch modulation. Without this sensor, the transmission control module cannot determine output speed, leading to erratic behavior. It is often replaced alongside the 4143101025 HOUSING and 4143301055 HOUSING during major overhauls.

Symptoms of Failure

• Erratic shifting or gear hunting: A failing speed sensor sends intermittent or no signal, causing the transmission to shift unpredictably or hunt for gears at highway speeds.
• Speedometer malfunction or zero reading: When the 0501.337.904 sensor fails, the vehicle’s speedometer may drop to zero or fluctuate wildly, even while the drivetrain is engaged.
• Transmission enters limp mode: The control unit detects a missing speed signal and forces the transmission into a safe, low-gear mode to prevent damage, often accompanied by a check engine light.
• Delayed or harsh engagement: Worn sensors cause delayed clutch application or harsh shifts, particularly when moving from neutral to drive or reverse.

Technical Specifications

Compatibility

This speed sensor is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with certain WG180 and WG200 variants that share the same sensor port location. The 0501.337.904 sensor interfaces directly with the transmission control unit and is secured using a 0631329135 SPRING PIN and a 4143298040 CASE assembly. Always verify your transmission model number before ordering.

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