ZF 0730.301.882 RING | OEM Genuine Part

Overview

The ZF 0730.301.882 RING is a precision-engineered OEM genuine component designed for critical sealing and alignment functions within heavy-duty ZF transmissions used in construction machinery. This ring sits within the clutch drum or planetary gear assembly, where it maintains hydraulic pressure integrity and prevents fluid bypass between rotating and stationary elements. The SKU 0730.301.882 is manufactured to exact ZF tolerances, ensuring proper fitment and long service life in demanding off-highway applications. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this ring forms a leak-proof barrier essential for maintaining clutch pack engagement pressures.

Symptoms of Failure

When the ZF 0730.301.882 RING wears out, operators typically notice these specific failure indicators:

• Hydraulic oil seepage around transmission housing joints – A worn ring allows pressurized ATF to escape, often visible as wet spots near the 0634313603 O-RING sealing surfaces.
• Intermittent gear slipping under load – Reduced sealing pressure causes clutch packs to lose grip, particularly during digging or lifting operations.
• Delayed engagement when shifting from neutral to drive – The ring’s degradation allows pressure bleed-off, extending shift times by 1-3 seconds.
• Transmission overheating combined with low pressure warnings – Internal leakage generates excess heat and triggers dash-mounted alarms.

Technical Specifications

Compatibility

This ring is engineered for ZF power shift transmissions commonly found in construction loaders, graders, and excavators. It is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG250. The part also fits select variants of the 4WG-200 and 6WG-250 series used in articulated dump trucks. For proper installation, always pair this ring with a new 4475280018 SCREW PLUG to ensure correct torque retention and sealing compression.

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