Overview
The ZF 2099.109.038 DIFFERENTIAL is a critical torque-distributing assembly within the final drive of heavy-duty construction machinery transmissions. This OEM genuine part sits at the core of the axle housing, where it receives rotational force from the crown wheel and splits it between the two axle shafts, allowing wheels to rotate at different speeds during turns. The SKU 2099.109.038 is engineered specifically for ZF drivetrains, ensuring precise gear mesh and load handling in demanding earthmoving and material handling equipment.
Symptoms of Failure
- Chattering or grinding noise during turns – Worn internal gears cause harsh metallic sounds when the differential compensates for speed differences between left and right wheels.
- Uneven tire wear patterns – A failing differential allows excessive wheel spin or drag, leading to rapid, scalloped wear on drive tires.
- Oil leakage from axle housing seals – Cracks or warping in the differential case force lubricant past seals, visible as drips near the differential housing.
- Vibration under load – Damaged bearing surfaces or gear teeth create rhythmic shaking through the chassis when the machine is under heavy strain.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2099.109.038 |
| Type | Differential Assembly |
| Material | Case-hardened alloy steel |
| Weight | 18.5 kg (40.8 lbs) |
| Outer Diameter | 285 mm |
| Overall Length | 210 mm |
| OEM Reference | ZF 2099.109.038 |
| Bolt Pattern | 8 x M12 on 160 mm PCD |
Compatibility
This differential is designed for ZF WG180, WG200, and WG310 series transmissions commonly installed in wheel loaders, graders, and telescopic handlers. It also fits select ZF TC-Tronic and Ecolite drivelines used in medium-duty construction machinery. Always verify your transmission model suffix before ordering.
In the same final drive assembly, this differential works directly with the 2098309008 CROWN WHEEL to transfer torque from the pinion gear. The 2098209016 DIFFERENTIAL variant shares the same housing geometry, while the 2095309059 DIFF.HOUSING encloses the entire gearset. A 0631329086 SPRING PIN secures the cross shaft within the differential carrier.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0730300820 | THRUST WASHER | Reduces axial friction between gears and housing |
| 4482360002 | AXLE BEVEL GEAR | Transfers torque from differential to axle shafts |
| 2095309081 | DIFFERENTIAL AXLE | Carries side gears within the differential case |
| 5838300811 | THRUST WASHER | Prevents gear end-play under load |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with axle bevel gears for speed differentiation |
| 2095309061 | SLEEVE | Spaces and aligns bearings on the differential carrier |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
