ZF 4699.372.112 STEERING PINION for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.372.112 STEERING PINION is a critical component within the steering gear assembly of ZF’s heavy-duty WG-series transmissions. This OEM genuine part directly translates rotational input from the steering column into linear motion, directing hydraulic fluid to the steering cylinder for precise vehicle control. Designed for high-cycle industrial applications, the pinion engages with the rack inside the gearbox housing. The SKU 4699.372.112 is engineered to exact OEM tolerances, ensuring minimal backlash and consistent steering response under load. It is commonly installed alongside the 4699100080: BASIC GEARBOX to restore full steering assembly integrity.

Symptoms of Failure

• Steering wheel free play exceeding 15 degrees: Worn pinion teeth create excessive lash, causing delayed response when turning the wheel.
• Intermittent hydraulic whine or groaning: A damaged pinion surface disrupts fluid flow, leading to cavitation noise during sharp turns.
• Uneven tire wear on steer axles: Imprecise pinion engagement forces constant micro-corrections, accelerating tread scalloping.
• Oil seepage at the steering input shaft: A worn pinion bearing surface compromises the adjacent 0634309122: SHAFT SEAL, allowing fluid migration.

Technical Specifications

Compatibility

This steering pinion is specifically validated for ZF WG100, WG130, and WG131 steering gear models. It also fits select WG180 and WG200 variants when used with the correct 0630000091: SHIM RING for preload adjustment. For WG250 applications, verify housing bore dimensions. Always replace the 0634801038: SEALING RING and shaft seal concurrently to prevent contamination ingress.

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