Overview
The ZF 1203.308.016 SPEEDOMETER PINION is a critical mechanical component engineered for the WG150 series transmission. This genuine OEM part precisely engages with the output shaft to convert rotational speed into a signal for the vehicle’s speedometer, ensuring accurate velocity readings during operation. Positioned within the transmission housing assembly, the pinion interfaces directly with the drive gear and the speed sensor. The SKU 1203.308.016 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and reliable data transmission. When installed alongside a robust TRANSMISSION HOUSING or a TRANSMISSION HOUSING, this pinion maintains the integrity of the drivetrain’s monitoring system.
Symptoms of Failure
When the ZF 1203.308.016 SPEEDOMETER PINION wears out, operators will notice distinct performance issues. Common failure symptoms include:
- Intermittent or erratic speedometer readings: The needle may jump or drop to zero without warning, often caused by worn gear teeth on the pinion.
- Complete loss of speed signal: A stripped pinion will stop transmitting rotation data, leading to a dead speedometer and potential cruise control failure.
- Transmission fluid seepage around the sensor bore: A degraded pinion seal can allow ATF to leak past the housing, leaving puddles under the vehicle.
- Audible whining or grinding noise from the transmission: Worn plastic or metal pinion teeth create a high-pitched sound during gear rotation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 1203.308.016 |
| Material | Hardened Steel / Engineering Plastic Composite |
| Weight | 0.045 kg (approx.) |
| Overall Length | 42 mm |
| Gear Diameter | 18 mm |
| Tooth Count | 16 Teeth |
| OEM Reference | ZF 1203.308.016 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
While the 1203.308.016 is specifically listed for the WG150 series, its design and tooth profile make it suitable for other ZF WG-family transmissions. Based on the part type and common ZF architecture, this speedometer pinion is compatible with the following models: WG150, WG180, WG200, and WG210 series. Always verify the tooth count and shaft diameter against your existing unit. For proper installation, ensure the TYPE PLATE on your transmission matches the OEM specifications, and secure the assembly using a GROOVED STUD to prevent vibration loosening.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Encloses and supports internal gears and shafts |
| 4642301207 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365067 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Fastener for securing housing components |
| 4642301168 | SCREEN SHEET | Filter screen for transmission fluid |
| 4642301169 | SCREEN SHEET | Fine mesh screen for debris filtration |
| 0636100621 | HEXAGON SCREW | Hex-head bolt for assembly |
| 4642301186 | SCREEN SHEET | Replacement screen for oil pan |
| 4644106300 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644306500 | COVER PLATE | Seals the transmission housing access port |
ZF 1203.308.016 SPEEDOMETER PINION – Gear RFQ Support
Use ZF 1203.308.016 SPEEDOMETER PINION as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 1203.308.016 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: SPEEDOMETER
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 1203.308.016 |
|---|---|
| Normalized SKU | 1203308016 |
| Part name | SPEEDOMETER PINION |
| Product category | gear |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4661.302.010 GEAR
- ZF 2094.306.024 GEAR SHIFT RAIL
- ZF 4642.353.026 SPUR GEAR
- ZF 4143.142.013 GEAR SHIFT SENSOR
- ZF 4143.142.022 GEAR SHIFT SENSOR
