Overview
The ZF 4699.019.004 GP19 is a critical OEM genuine component engineered for high-stress environments within ZF heavy-duty transmissions. This part functions as a precision-machined gear set or planetary assembly, responsible for torque distribution and speed regulation in the drivetrain. Positioned in the main power flow path, the SKU 4699.019.004 ensures seamless engagement between the input shaft and the output shaft. When paired with the 4699101161: HOUSING, it forms a sealed, lubricated chamber that withstands extreme loads in construction machinery applications.
Symptoms of Failure
- Erratic gear engagement or slipping: Worn teeth on the GP19 cause intermittent power loss under load, often misdiagnosed as clutch failure.
- Metallic grinding noise during shifting: Debris from a failing gear set contaminates the oil, leading to audible scraping sounds from the transmission housing.
- Oil leaks near the bell housing: A damaged GP19 can distort the 4699102187: INPUT seal interface, causing fluid seepage.
- Vibration at specific RPM ranges: Uneven wear on the planetary gear set creates harmonic vibrations that resonate through the chassis.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.019.004 (GP19) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (9.3 lbs) |
| Outer Diameter | 180 mm |
| Tooth Count | 19 (sun gear) |
| OEM Reference | ZF 4699.019.004 |
| Hardness | 58-62 HRC |
Compatibility
This GP19 gear set is designed for ZF WG-series transmissions commonly used in wheel loaders, excavators, and telehandlers. It is a direct fit for the WG180 and WG200 models, as well as the WG150 series with a 19-tooth input configuration. For proper assembly, the 4699103125: OUTPUT shaft must be aligned with the GP19’s internal spline. Additionally, the 4699109104: BRAKE PARTS kit is often replaced concurrently to prevent contamination from worn friction material.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101161 | HOUSING | Encloses gear set and maintains oil pressure |
| 4699102187 | INPUT | Transfers engine torque to the GP19 |
| 4699103125 | OUTPUT | Delivers reduced speed to the driveline |
| 4699109104 | BRAKE PARTS | Provides holding torque for park/neutral |
| 4699298046 | OUTPUT | Alternate output shaft for WG200 |
| 4699309058 | HOUSING COVER | Seals the rear of the transmission |
| 0636101411 | CAP SCREW | Fastens housing to bell housing |
| 0631302212 | CYLINDRICAL PIN | Aligns gear set during assembly |
| 0636302013 | SCREW PLUG | Seals oil passages |
| 0750108986 | SCREW PLUG | Drain plug for maintenance access |
