Overview
The ZF 2099.060.004 TRA 16 is a genuine OEM transmission component engineered for heavy-duty construction machinery. This part functions as a critical internal gear assembly within the planetary gear set of ZF power shift transmissions, specifically managing torque distribution from the input shaft to the differential system. The SKU 2099.060.004 is precision-machined to OEM tolerances to ensure seamless engagement with adjacent components like the 2099109004 DIFFERENTIAL and the 2093209095 DIFFERENTIAL assembly. Without this part, the transmission cannot maintain proper gear synchronization under load.
Symptoms of Failure
- Intermittent gear slipping under load – When the 2099.060.004 wears, the transmission may lose torque during uphill climbs or heavy digging, causing sudden RPM spikes without forward motion.
- Metallic grinding noise from the transmission housing – Worn teeth on this gear produce a distinct high-pitched whine or grinding sound, especially during low-speed maneuvering in construction zones.
- Oil contamination with bronze or steel particles – As the gear surface degrades, metal shavings appear in the transmission fluid, often clogging the filter and damaging the 0750117075 TAPER ROLLER BEARING.
- Hard shifting or delayed engagement – Operators may experience a noticeable lag when shifting from forward to reverse, indicating the gear is not meshing correctly with the 2093309071 DIFF.HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2099.060.004 |
| Designation | TRA 16 Gear Assembly |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 4.2 kg (9.3 lbs) |
| Outer Diameter | 168 mm |
| Internal Spline Count | 24 teeth |
| OEM Reference | ZF 2099.060.004 |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This genuine ZF part is designed for use in the following transmission models commonly found in wheel loaders, graders, and excavators: ZF WG180, ZF WG200, and ZF WG210 series. It also fits select ZF 4WG-200 and ZF 6WG-200 variants. Always verify the part number against your transmission’s serial plate before installation. The 2099.060.004 interfaces directly with the 2099109004 DIFFERENTIAL and the 2093209095 DIFFERENTIAL to ensure proper power flow.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109004 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating gear loads |
| 2093209095 | DIFFERENTIAL | Secondary torque split assembly |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures gear alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheels |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to hubs |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
