ZF 2099.070.015 TRA 20 | OEM Genuine Part

Overview

The ZF 2099.070.015 TRA 20 is a genuine OEM transmission component engineered for heavy-duty construction machinery. This precision-machined part functions as a critical load-bearing element within the planetary gearset of ZF’s modular transmission systems, specifically designed to manage torque distribution and rotational stability under extreme operational stress. As an integral subassembly, the 2099.070.015 interfaces directly with the differential housing to ensure synchronized power transfer from the gearbox to the drive axles. The SKU 2099.070.015 is manufactured to ZF’s original equipment tolerances, guaranteeing seamless integration with existing drivetrain architecture. When installed alongside the 2099109042 DIFFERENTIAL, this component maintains optimal gear mesh alignment, reducing parasitic power loss in high-torque applications such as wheel loaders and excavators.

Symptoms of Failure

• Progressive oil seepage from transmission housing seals: When the 2099.070.015 wears, degraded mating surfaces allow hydraulic fluid to bypass seals, leaving visible drips under parked equipment. This often coincides with 0750117075 TAPER ROLLER BEARING degradation.
• Intermittent gear slipping under load: Worn internal splines cause momentary power loss during uphill operation or bucket digging cycles, particularly when paired with a failing 2093209094 DIFFERENTIAL.
• Metallic grinding noise during directional shifts: Excessive clearance from worn thrust faces produces a distinct scraping sound when transitioning from forward to reverse, indicating the 2093309078 DIFF.HOUSING may also require inspection.
• Vibration at steady-state highway speeds: Unbalanced rotation from part deformation creates rhythmic chassis shudder, often misdiagnosed as tire imbalance.

Technical Specifications

Compatibility

This genuine ZF part is engineered for the WG180, WG200, and WG210 transmission series commonly deployed in construction machinery. It directly replaces the original equipment component in ZF 4WG-180, 4WG-200, and 6WG-210 models used by manufacturers such as Liebherr, Caterpillar, and Volvo CE. The 2099.070.015 is also compatible with select ZF Ecolife transmissions when retrofitted with the appropriate 0631100223 SPRING PIN kit. Always verify serial number ranges with your transmission’s service manual before installation.

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