ZF 0730.009.218 RING for WG100 | OEM Genuine Part

Overview

The ZF 0730.009.218 RING is a precision-engineered retaining and sealing component designed specifically for the WG 100 series transmission family. This OEM genuine part sits within the clutch pack or planetary gear assembly, where it functions as a critical axial retention element, ensuring proper clearance and load distribution under high-torque conditions. The SKU 0730.009.218 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged rings in heavy-duty industrial transmissions. When installed alongside the 4651101006 TRANSMISSION HOUSING, this ring helps maintain structural integrity within the rotating assembly.

Symptoms of Failure

• Intermittent gear slipping under load: A worn 0730.009.218 ring can no longer maintain proper axial clearance, causing clutch packs to lose clamping force during high-torque operation.
• Metallic debris in transmission fluid: As the ring surface degrades, fine steel particles contaminate the oil, often detected during routine filter inspections or magnetic drain plug checks.
• Abnormal vibration or whining noise: Loss of ring thickness allows planetary gears to shift out of alignment, producing a distinct low-frequency hum that intensifies with vehicle speed.
• Delayed engagement from Neutral to Drive: Insufficient ring height prevents proper preload on the clutch piston, resulting in a 1-2 second lag before power transfer begins.

Technical Specifications

Compatibility

This ring is engineered for the ZF WG 100 series, including models WG100, WG120, and WG150. It also fits select WG180 and WG200 variants that share the same planetary carrier design. For proper installation, always pair this ring with a new 0634303928 O-RING to prevent fluid bypass. The 4651301034 HOUSING and 4651301013 HOUSING must be inspected for wear grooves when replacing this ring, as housing deformation can accelerate ring failure.

Related Components