Overview
The ZF 4642.107.200 SPEEDOMETER is a precision-engineered OEM genuine component designed specifically for the WG 150 series transmission. This critical sensor monitors output shaft rotational speed, converting mechanical motion into an electrical signal that drives the vehicle’s speedometer and supports transmission control unit (TCU) shift logic. Positioned within the rear housing assembly, the speedometer ensures accurate vehicle speed data for optimal gear selection and fuel efficiency. The SKU 4642.107.200 is manufactured to ZF’s exacting tolerances, guaranteeing seamless integration with your existing drivetrain. When paired with a robust 4642101108: TRANSMISSION HOUSING or the 4642301208: TRANSMISSION HOUSING, this speedometer delivers reliable performance in heavy-duty applications.
Symptoms of Failure
- Inaccurate speed readings or erratic needle fluctuation — A failing 4642.107.200 often causes the speedometer to jump, drop to zero, or display incorrect values, especially during deceleration or low-speed operation.
- Transmission shift hesitation or harsh engagement — Without accurate speed data from the speedometer, the TCU may delay shifts or apply clutches aggressively, leading to drivability complaints.
- Check engine or transmission warning lamp illumination — Diagnostic trouble codes (DTCs) related to output speed sensor circuit faults (e.g., P0722) frequently point to a worn or contaminated speedometer unit.
- Oil seepage around the sensor mounting point — Deteriorated internal seals allow transmission fluid to leak past the speedometer housing, potentially contaminating the electrical connector.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.107.200 |
| OEM Reference | ZF 4642.107.200 (Genuine) |
| Material | Reinforced thermoset plastic housing with brass drive gear |
| Weight | 0.18 kg (0.40 lbs) |
| Overall Length | 95 mm |
| Mounting Thread | M16 x 1.5 |
| Output Signal | Hall-effect, 0-5V square wave |
| Operating Temperature | -40°C to +120°C |
| Seal Type | Integrated O-ring (replace with 0634303340: O-RING) |
Compatibility
This speedometer is primarily engineered for the ZF WG 150 series, but its mounting pattern and signal output make it compatible with several other ZF powershift transmissions. Verified models include the WG 150, WG 180, and WG 200 series. It also fits select WG 120 variants used in agricultural and construction equipment. For proper installation, ensure the transmission housing is clean and free of debris; the 0730365125: TYPE PLATE on your unit will confirm the exact model designation. Secure the sensor using a 0636100621: HEXAGON SCREW and seal the port with a 0630361029: SEALING CAP if not immediately installed.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365125 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Alignment dowel for housing assembly |
| 4642301168 | SCREEN SHEET | Oil filter screen for lubrication circuit |
| 4642301169 | SCREEN SHEET | Secondary oil filter screen |
| 0636100621 | HEXAGON SCREW | Fastener for sensor mounting |
| 0630361029 | SEALING CAP | Port plug for unused sensor openings |
| 4642306254 | ADAPTER | Speedometer drive adapter sleeve |
| 0634303340 | O-RING | Seal for speedometer housing |
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