ZF 0730.361.201 SEALING CAP for WG90/WG92/WG94 | OEM Genuine Part

Overview

The ZF 0730.361.201 SEALING CAP is a precision-engineered component designed to seal the output shaft area on ZF WG series transmissions. Positioned at the rear of the transmission housing, this OEM genuine part prevents fluid migration and contaminant ingress, ensuring hydraulic pressure integrity. The SKU 0730.361.201 is critical for maintaining the closed-loop lubrication system in heavy-duty off-highway applications. When installed alongside the 4660101011: TRANSMISSION HOUSING, it forms a leak-proof barrier that protects internal gears and bearings from premature wear.

Symptoms of Failure

• Transmission fluid seepage at the rear seal area – visible oil drips or wet spots under the vehicle after parking, often accompanied by a burnt smell from fluid loss.
• Erratic gear engagement or delayed shifting – a worn sealing cap allows air ingress, causing hydraulic pressure fluctuations that lead to “ZF transmission slipping under load” or “WG200 series hard shifting.”
• Contaminated transmission fluid – dirt or water entering through a compromised seal results in “transmission fluid turning milky” or “metal particles in oil pan.”
• Increased operating noise from the output shaft area – a dry or debris-filled bearing produces a “whining sound during deceleration” or “grinding noise in reverse gear.”

Technical Specifications

Compatibility

This sealing cap is engineered for ZF WG series transmissions, specifically the WG180, WG200, WG90, WG92, WG94, and WG98 models. It is a direct replacement for the original cap found in the output shaft housing assembly. For complete sealing integrity, always pair this cap with a new 0634100317: O-RING and inspect the 4660301018: HOUSING for cracks or scoring. The cap also interfaces with the 0501209818: RANGE SELECTOR shaft bore, where a worn cap can cause false neutral signals. Additionally, the 4660198001: PERIPHERALS kit includes this cap for complete rebuilds.

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