Overview
The ZF 4616.107.003 SPEEDOMETER is a critical electronic sensor module designed specifically for the WG 65 Series transmission family. This OEM genuine part monitors output shaft rotational speed and relays precise data to the vehicle’s dashboard and electronic control unit (ECU). Positioned within the rear housing assembly, the speedometer ensures accurate gear ratio management and shift timing. The SKU 4616.107.003 is engineered to withstand high-vibration environments and thermal cycling common in heavy-duty industrial applications. When paired with a robust 4616101059: TRANSMISSION HOUSING, this component maintains signal integrity for optimal transmission performance.
Symptoms of Failure
- Erratic or fluctuating speedometer readings – The needle jumps or drops unexpectedly, often accompanied by a check-engine light. This indicates internal sensor degradation or electrical contact wear.
- Transmission fails to shift at correct RPM – The ECU receives faulty speed data, causing delayed or harsh gear changes. This symptom is common when the 4616.107.003 unit loses magnetic field strength.
- Intermittent loss of cruise control function – Without accurate speed input, the system disengages cruise control. This often occurs alongside dashboard warning codes for speed sensor circuit faults.
- Oil seepage around the sensor mounting point – A compromised O-ring or housing seal allows transmission fluid to leak past the speedometer, potentially shorting internal electronics.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.107.003 |
| Type | Magnetic reluctance speed sensor |
| Housing Material | Zinc-alloy die-cast with nickel plating |
| Weight | 0.18 kg (0.40 lbs) |
| Overall Length | 82 mm |
| Thread Size | M16 x 1.5 |
| Output Signal | Square wave, 0–5 VDC |
| Operating Temperature | -40°C to +125°C |
| OEM Reference | ZF 4616.107.003 |
Compatibility
This speedometer is primarily designed for the WG 65 Series but is also compatible with several ZF WG-series transmissions that share the same sensor mounting pattern and electrical interface. Verified models include WG180, WG200, WG210, and WG250. It is not backward-compatible with older ZF Ecomat or AS Tronic series without adapter harness modifications. For proper installation, always use the correct 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW to secure the sensor bracket, along with a 0636016015: HEXAGON SCREW for the housing flange.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear train and sensor mounting |
| 0636011038 | HEXAGON SCREW | M8 fastener for sensor bracket attachment |
| 0636011118 | HEXAGON SCREW | M10 fastener for housing cover |
| 0636016015 | HEXAGON SCREW | M12 flange bolt for output flange |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0634313118 | O-RING | Seals sensor bore against fluid ingress |
| 0636304019 | SCREW PLUG | Closes unused sensor port |
| 0634801152 | SEALING RING | Copper washer for plug sealing |
| 0732611049 | FILTER INSERT | Internal oil strainer for valve body |
| 0634303718 | O-RING | Seals filter housing cover |
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