ZF 2099.109.045 DIFFERENTIAL | OEM Genuine Part

Overview

The ZF 2099.109.045 DIFFERENTIAL is a critical torque-distribution component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 2099.109.045, sits at the core of the differential housing, where it transfers rotational force from the driveshaft to the axle shafts while allowing the wheels to rotate at different speeds during turns. Designed to withstand extreme loads and high-torque applications, this differential ensures consistent power delivery in demanding environments such as wheel loaders, graders, and dump trucks. When paired with a robust DIFF.HOUSING, it forms the backbone of the drivetrain’s load-sharing capability.

Symptoms of Failure

• Grinding or chattering noise during turns: Worn internal gears cause metallic grinding sounds, especially when cornering under load. This often indicates damaged gear teeth or failed TAPER ROLLER BEARING components.
• Oil leaks from the differential housing: Seal degradation around the 2099.109.045 unit leads to visible gear oil seepage, often accompanied by a burnt smell from overheating lubricant.
• Uneven tire wear or wheel hop: A failing differential causes inconsistent torque split, resulting in rapid tire wear patterns and a hopping sensation during straight-line acceleration.
• Clunking on acceleration or deceleration: Excessive backlash from worn internal components produces a distinct clunk when transitioning between drive and coast, indicating the need for replacement.

Technical Specifications

Compatibility

This differential is engineered for ZF’s WG-series transmissions commonly used in construction machinery. It is a direct fit for the WG180 and WG200 series, as well as the heavy-duty WG250 models found in articulated dump trucks. The 2099.109.045 also integrates with earlier WG150 units when used with the correct SPRING PIN kit for alignment. For optimal performance, always verify the spline count and housing compatibility with your specific transmission model.

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