Overview
The ZF 0501.337.898 SPEED SENSOR is a critical electronic component responsible for monitoring rotational speed within the transmission assembly. Positioned directly on the valve body or housing of select ZF off-highway transmissions, this OEM genuine part converts gear rotation into precise electrical signals for the control unit. The SKU 0501.337.898 ensures accurate data transmission, enabling proper shift timing and clutch modulation. Without this sensor, the transmission control module cannot determine vehicle speed or gear position, making it indispensable for drivetrain reliability.
Symptoms of Failure
- Erratic shifting or gear hunting – A failing 0501.337.898 sensor sends intermittent signals, causing the transmission to shift unpredictably or constantly search for the correct gear.
- Loss of speedometer or tachometer function – When the speed sensor fails, dashboard gauges may drop to zero or display incorrect readings, a common long-tail search query for ZF transmission diagnostics.
- Transmission enters limp mode – The control unit detects a missing signal from the 0501.337.898 and forces the transmission into a reduced-performance safety mode, often accompanied by a warning light.
- Harsh or delayed engagement – Without accurate speed data, clutch packs engage abruptly or with noticeable lag, leading to driveline shock and accelerated wear on components like the 5838109007 DIFFERENTIAL.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.337.898 |
| Type | Inductive Speed Sensor |
| Housing Material | Stainless Steel / Thermoplastic |
| Thread Size | M18 x 1.5 |
| Overall Length | 62 mm |
| Weight | 0.045 kg |
| Output Signal | Sine Wave (Variable Reluctance) |
| OEM Reference | ZF 0501.337.898 |
| Operating Temperature | -40°C to +150°C |
Compatibility
This speed sensor is engineered for ZF WG series powershift transmissions, specifically the WG100, WG130, and WG131 models. It also fits select variants of the WG180 and WG200 series used in construction and agricultural machinery. The 0501.337.898 is not interchangeable with earlier WG series sensors without adapter harnesses. When replacing this sensor, always inspect the 0750117075 TAPER ROLLER BEARING for wear, as bearing play can damage the sensor tip. Additionally, verify the condition of the 2095209019 DIFFERENTIAL and the 0631329086 SPRING PIN securing the sensor bracket during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shafts under load |
| 2095209019 | DIFFERENTIAL | Rear axle torque distribution |
| 0631329086 | SPRING PIN | Secures sensor mounting bracket |
| 5838300817 | THRUST WASHER | Controls axial clearance in gear sets |
| 5838300682 | DIFFERENTIAL AXLE | Transmits power to wheel hubs |
| 5838300811 | THRUST WASHER | Reduces friction in planetary gears |
| 5841302064 | THRUST WASHER | Spacer for differential assembly |
| 5838300137 | OUTER CLUTCH DISK | Provides friction surface for clutch packs |
| 5838300138 | INNER CLUTCH DISK | Steel plate for clutch engagement |
