Overview
The ZF 4699.808.046 GK16 is a precision-engineered gear set assembly designed for the high-torque planetary sections of ZF heavy-duty transmissions. This OEM genuine part, identified by SKU 4699.808.046, functions as the primary power transfer component within the gear cluster, converting rotational input from the engine into controlled output for the driveline. It sits directly in the main shaft assembly of the transmission, working in concert with the 4699101093 HOUSING to maintain proper gear alignment and load distribution. As a critical wear item in construction machinery, this part ensures smooth shifting under extreme loads and sustained operational reliability.
Symptoms of Failure
When the ZF 4699.808.046 GK16 begins to fail, operators typically notice distinct performance degradation. Gear slipping under load is a primary indicator, often accompanied by a grinding noise during acceleration in construction equipment. Oil contamination with metallic debris in the transmission fluid signals advanced wear of the gear teeth. Intermittent loss of power transfer during uphill or heavy digging operations points to compromised gear engagement. Finally, vibration at specific RPM ranges suggests uneven tooth wear that can cascade into complete transmission failure if not addressed promptly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.808.046 |
| Designation | GK16 Gear Set |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 4.2 kg (9.3 lbs) |
| Outer Diameter | 168 mm |
| Inner Diameter | 45 mm |
| Tooth Count | 16 (input), 32 (output) |
| OEM Reference | ZF 4699.808.046 |
Compatibility
This GK16 gear set is engineered for ZF WG-series transmissions commonly used in construction machinery. It is a direct fit for the WG180, WG200, and WG210 models, as well as the Ecomat 4HP series found in wheel loaders and excavators. The part also integrates with the 4699102140 INPUT shaft and the 4699103054 OUTPUT flange to complete the drivetrain assembly. For rebuilds, pairing this gear set with a new 4699008046 GK16 ensures matched wear patterns and extended service life.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699008046 | GK16 | Matched gear set for dual-stage reduction |
| 4699101093 | HOUSING | Encloses and supports the gear assembly |
| 4699102140 | INPUT | Transfers engine torque to the gear set |
| 4699103054 | OUTPUT | Delivers reduced speed to the final drive |
| 4699105036 | HOUSING TOP PART | Upper housing section for gear retention |
| 4699301175 | HOUSING | Alternate housing variant for WG200 |
| 4699301041 | COVER | Seals the housing against contamination |
| 0634303936 | O-RING | Prevents fluid leakage at housing joints |
| 0630513203 | SNAP RING | Secures the gear set on the shaft |
| 0750110302 | SHAFT SEAL | Contains oil at the input/output points |
