Overview
The ZF 4699.808.047 GK16 is a precision-engineered gear set assembly designed for heavy-duty construction machinery transmissions. This OEM genuine part sits within the planetary gear train of ZF’s modular transmission systems, where it manages torque distribution and speed reduction during high-load operations. The SKU 4699.808.047 is critical for maintaining proper gear mesh alignment and load-bearing capacity in excavators, wheel loaders, and graders. When paired with the 4699008047: GK16 companion component, this assembly ensures synchronized power flow from the input shaft to the output shaft.
Symptoms of Failure
- Intermittent gear slipping under load – Worn teeth on the 4699.808.047 cause momentary loss of torque transfer, especially when climbing grades or lifting heavy materials.
- Metallic grinding noise during shifting – Deteriorated bearing surfaces within the GK16 assembly produce a distinct scraping sound that intensifies with transmission temperature.
- Hydraulic oil contamination with metal particles – Flaking gear material enters the lubrication system, visible as glitter in oil samples during routine maintenance.
- Delayed engagement from neutral to drive – Excessive clearance in the gear set prevents immediate clutch pack engagement, creating a 2-3 second lag.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.808.047 |
| Designation | GK16 Gear Set Assembly |
| Material | Case-hardened 20MnCr5 alloy steel |
| Weight | 4.8 kg (10.6 lbs) |
| Outer Diameter | 168 mm |
| Tooth Count | 47 (input) / 23 (output) |
| Heat Treatment | Carburized to 58-62 HRC |
| OEM Reference | ZF 4699.808.047 |
Compatibility
This GK16 gear set is engineered for ZF WG180, WG200, and WG210 series transmissions commonly used in construction machinery. It directly replaces the original equipment in 4699101093: HOUSING assemblies and interfaces with the 4699102142: INPUT shaft and 4699103054: OUTPUT shaft. Compatible models include ZF 4WG180, 5WG200, and 6WG210 variants found in Volvo, Caterpillar, and Komatsu equipment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699008047 | GK16 | Companion gear set for torque splitting |
| 4699101093 | HOUSING | Main transmission casing |
| 4699102142 | INPUT | Primary drive shaft |
| 4699103054 | OUTPUT | Final drive shaft |
| 4699105072 | HOUSING TOP PART | Upper casing section |
| 4699301175 | HOUSING | Secondary housing component |
| 4699301041 | COVER | Access cover plate |
| 0634303936 | O-RING | Hydraulic seal |
| 0630513203 | SNAP RING | Retaining ring for gear stack |
| 0750110302 | SHAFT SEAL | Output shaft oil seal |
