Overview
The ZF 0501.337.900 SPEED SENSOR is a critical electronic component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part monitors the rotational speed of the output shaft, sending precise data to the transmission control unit to optimize shift timing and torque converter lockup. The SKU 0501.337.900 is mounted directly into the transmission housing, where it interfaces with a tone wheel to generate a reliable signal. For optimal drivetrain performance, this sensor works in concert with the 2093109013 DIFFERENTIAL and the 0750117075 TAPER ROLLER BEARING to ensure smooth power delivery.
Symptoms of Failure
When the 0501.337.900 speed sensor begins to degrade, operators often notice erratic shifting patterns. A common symptom is harsh or delayed gear engagement, particularly when accelerating from a stop. Another frequent issue is transmission slipping under load, where the engine revs without a corresponding increase in vehicle speed. Additionally, the check engine or transmission warning light may illuminate, often accompanied by fault codes related to speed signal loss. In severe cases, the transmission may enter a limp-home mode, limiting speed to protect internal components. These failure modes are distinct from issues caused by a worn 2093209096 DIFFERENTIAL or a damaged 2093309073 DIFF.HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.337.900 |
| Type | Inductive Speed Sensor |
| Housing Material | Steel with Nickel Plating |
| Thread Size | M18 x 1.5 |
| Overall Length | 65 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 0501.337.900 |
| Connector Type | DIN 2-Pin |
| Output Signal | Sine Wave (AC) |
Compatibility
This genuine ZF speed sensor is specifically designed for the following transmission models: WG100, WG130, and WG131. It is also compatible with certain variants of the WG180 and WG200 series that share the same electronic architecture. Always verify your transmission serial number before ordering. The sensor is a direct replacement for OEM units and does not require any adapter harness. For related drivetrain components, consider the 0631100223 SPRING PIN and 0730300820 THRUST WASHER for complete assembly service.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109013 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shafts under load |
| 2093209096 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309073 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures components in assembly |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Heavy-duty axial load bearing |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can the 0501.337.900 speed sensor be tested before installation?
A: Yes, you can measure resistance across the two pins; a typical reading should be between 400 and 600 ohms at room temperature. Any open circuit indicates a faulty sensor.
Q: Will a failing speed sensor cause transmission overheating?
A: Indirectly, yes. Erratic shift patterns from a bad sensor can cause excessive clutch slippage, generating heat that may damage the 2093109013 DIFFERENTIAL or other internal components over time.
Q: Is this sensor interchangeable between WG100 and WG131 transmissions?
A: Yes, the 0501.337.900 is a common part across these models. However, always verify the connector orientation and thread pitch to ensure a proper seal against oil leaks.
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