ZF 2099.109.016 DIFFERENTIAL | OEM Genuine Part

Overview

The ZF 2099.109.016 DIFFERENTIAL is a critical torque-distributing assembly within the final drive of heavy-duty construction machinery transmissions. Positioned between the axle shafts, this OEM genuine component ensures that power from the driveline is split evenly to the wheels, allowing for smooth cornering and reducing tire scrub on uneven terrain. The SKU 2099.109.016 is engineered to ZF’s exacting tolerances, providing precise gear mesh and long service life in demanding environments such as wheel loaders, graders, and dump trucks. When paired with a properly maintained DIFF.HOUSING, this differential assembly maintains consistent oil flow and heat dissipation.

Symptoms of Failure

• Chattering or grinding noise during turns: Worn internal gears or damaged cross shafts cause audible metal-on-metal contact, especially when maneuvering at low speeds.
• Uneven tire wear or wheel hop: A failing differential cannot equalize torque, leading to one wheel spinning faster than the other, which accelerates tread degradation.
• Oil leaks near the axle housing: Degraded seals or cracks in the differential case allow hypoid gear oil to escape, visible as drips or puddles under the machine.
• Vibration under load: Excessive play in the differential gears creates driveline shudder during acceleration or when climbing grades.

Technical Specifications

Compatibility

This differential is designed for ZF’s WG series powershift transmissions commonly used in construction machinery. It directly fits the following models: WG180, WG200, and WG210. It also serves as a direct replacement in certain ZF 4WG-200 and ZF 6WG-200 drivelines. For proper installation, ensure the TAPER ROLLER BEARING (part 0750117075) is replaced simultaneously to maintain correct preload. The DIFFERENTIAL assembly (part 2093209094) shares the same carrier, while the SPRING PIN (0631100223) secures the cross shaft in position.

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