Overview
The ZF 2099.111.028 OUTPUT is a critical final-drive component engineered for heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary power take-off point, transferring rotational force from the differential assembly to the axle shafts. Positioned at the terminal end of the transmission housing, the 2099.111.028 OUTPUT ensures precise torque delivery under extreme loads. The SKU 2099.111.028 is manufactured to ZF’s exacting tolerances, guaranteeing seamless integration with the 2099109018: DIFFERENTIAL and 2099364014: CROWN WHEEL within the same assembly. Without this output component, the driveline cannot maintain proper alignment, leading to accelerated wear on surrounding gears.
Symptoms of Failure
- Oil seepage at the output flange seal – When the 2099.111.028 OUTPUT develops surface wear, hydraulic fluid escapes past the sealing lip, leaving visible drips under the transmission housing.
- Intermittent gear slipping under load – A worn output spline causes momentary disengagement between the shaft and the 2099209001: DIFFERENTIAL, resulting in power loss during excavation or grading.
- Excessive driveline vibration – Bearing race degradation within the output assembly produces harmonic oscillations that intensify at higher RPM, often misdiagnosed as wheel imbalance.
- Metallic debris in transmission fluid – Flaking from the output gear teeth contaminates the oil, visible as silver particles during routine drain intervals.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2099.111.028 |
| OEM Reference | ZF 2099.111.028 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Weight | 4.2 kg (9.26 lbs) |
| Output Spline Count | 24 involute splines |
| Flange Diameter | 98 mm |
| Bearing Type | Single-row tapered roller |
| Max Torque Capacity | 1,450 Nm |
Compatibility
This output component is designed for ZF WG-series powershift transmissions commonly found in wheel loaders, dozers, and telehandlers. Verified compatibility includes the WG180, WG200, and WG210 models. It also integrates with the 2098309010: DIFFERENTIAL HOUSING used in select 4-speed and 6-speed configurations. Always cross-reference your transmission serial number before installation to ensure correct fitment with the 2099364014: CROWN WHEEL and 2099109018: DIFFERENTIAL.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109018 | DIFFERENTIAL | Distributes torque between left and right axles |
| 2099364014 | CROWN WHEEL | Transfers rotation from pinion to differential |
| 2099209001 | DIFFERENTIAL | Alternate differential variant for WG200 |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 2098309009 | DIFFERENTIAL HOUSING | Replacement housing for earlier production runs |
| 2098309031 | AXLE BEVEL GEAR | Right-hand side bevel gear for final drive |
| 2098309030 | AXLE BEVEL GEAR | Left-hand side bevel gear for final drive |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Spider gear inside differential case |
| 12883200682 | THRUST WASHER | Reduces axial play in differential assembly |
| 0635332059 | BALL BEARING | Supports output shaft rotation |
