Overview
The ZF 4616.125.013 INDUCTIVE SENSOR is a precision electronic component engineered specifically for the WG 65 Series transmission. This OEM genuine part monitors rotational speed and position of the output shaft, sending critical data to the transmission control unit (TCU) to ensure precise shift timing and clutch engagement. Installed directly into the transmission housing, the sensor uses a non-contact inductive principle to detect ferrous targets without physical wear. The SKU 4616.125.013 is the exact replacement for the original factory sensor, guaranteeing a perfect fit and reliable signal integrity in heavy-duty applications.
Symptoms of Failure
- Erratic shifting or gear hunting – When the 4616.125.013 fails, the TCU receives inconsistent speed data, causing the transmission to shift unpredictably or hunt for the correct gear under load.
- Transmission stuck in limp mode – A faulty inductive sensor often triggers a fault code, forcing the WG65 into a reduced-power limp mode to prevent internal damage.
- No speedometer or tachometer reading – Since the sensor provides output shaft speed, a complete failure results in a loss of vehicle speed signal, leaving the driver without critical instrumentation.
- Delayed or harsh engagement – Degraded sensor output can lead to incorrect clutch fill times, producing jarring shifts or a noticeable delay when moving from neutral to drive.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4616.125.013 |
| Type | Inductive Proximity Sensor |
| Housing Material | Stainless Steel / Brass |
| Thread Size | M12 x 1.5 |
| Overall Length | 50 mm |
| Operating Voltage | 10–30 VDC |
| Output Type | PNP Normally Open (NO) |
| Weight | 0.04 kg |
| OEM Reference | ZF 4616.125.013 |
Compatibility
This inductive sensor is designed for the ZF WG 65 Series, including the WG65, WG180, WG200, and WG250 transmission models. It is also compatible with select off-highway and industrial ZF drivelines that utilize the same M12 inductive pickup configuration. Always verify your transmission serial number against the OEM parts catalog to confirm fitment.
Related Components
When replacing the 4616.125.013 sensor, it is common practice to inspect and replace associated sealing and control components. The 4616105417 VALVE regulates hydraulic pressure to the clutch packs, while the 0501319251 SOLENOID VALVE controls shift timing. Use a new 0636302013 SCREW PLUG and 0634801038 SEALING RING to prevent oil leaks at the sensor port. Below is a full list of parts commonly ordered together.
| Part Number | Name | Function |
|---|---|---|
| 4616105417 | VALVE | Hydraulic pressure regulation |
| 0501319251 | SOLENOID VALVE | Shift control actuation |
| 0636302013 | SCREW PLUG | Port sealing |
| 0634801038 | SEALING RING | Leak prevention |
| 4616305078 | CONSOLE | Mounting bracket |
| 0636010047 | HEXAGON SCREW | Fastener |
| 0636101020 | CAP SCREW | Cover fastener |
| 0630001010 | WASHER | Load distribution |
| 0637006015 | HEXAGON NUT | Threaded locking |
| 0637842523 | SCREW-IN SLEEVE | Alignment bushing |
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