ZF 4699.305.002 CENTERING RING | OEM Genuine Part

Overview

The ZF 4699.305.002 CENTERING RING is a precision-engineered OEM genuine component designed to ensure exact axial alignment within the transmission assembly of heavy-duty construction machinery. This critical locating ring sits between the torque converter housing and the main gearcase, preventing radial displacement during high-torque operation. The SKU 4699.305.002 is manufactured to ZF’s original tolerances, guaranteeing a concentric fit that reduces vibration and extends clutch pack life. Without this centering ring, even minor misalignment can accelerate wear on adjacent components such as the 4699101002: HOUSING and the 4699301188: HOUSING.

Symptoms of Failure

• Transmission oil leaks at the bell housing interface — A worn centering ring allows the housing to shift, breaking the seal between the 4699301128: COVER and the main case.
• Gear engagement hesitation or hard shifting — Misalignment caused by a degraded ring places uneven load on the input shaft, delaying clutch engagement.
• Abnormal driveline vibration under load — Loss of concentricity creates a wobble that transmits through the torque converter, often mistaken for a failing damper.
• Premature wear of the hexagon screw fasteners — When the centering ring fails, the 0636015047: HEXAGON SCREW set must absorb lateral forces, leading to loosening or shearing.

Technical Specifications

Compatibility

This centering ring is primarily used in ZF’s WG180, WG200, and WG210 series powershift transmissions found in wheel loaders, graders, and dozers. It also fits select 4WG-200 and 6WG-200 variants where the torque converter housing interfaces with the main gearcase. Always verify the housing part numbers—the 4699101002: HOUSING and 4699301188: HOUSING are common mates for this ring. For machines using the 4699301128: COVER, confirm bolt pattern compatibility with the 0636015047: HEXAGON SCREW set.

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