ZF 6029.199.146 PLUG KIT for WG90/WG94 | OEM Genuine Part

Overview

The ZF 6029.199.146 PLUG KIT is a critical sealing assembly designed for the WG 90 and WG 94 series transmissions. This OEM genuine part ensures the integrity of the hydraulic circuit by providing a secure closure for access ports within the transmission housing. Positioned directly within the main casing, this kit prevents contamination ingress and maintains system pressure during operation. The SKU 6029.199.146 is engineered to match factory tolerances, ensuring a precise fit when paired with the 4661101032: TRANSMISSION HOUSING and the 4661301047: HOUSING II assembly.

Symptoms of Failure

• External oil seepage around the plug bore: When the plug kit degrades, pressurized transmission fluid escapes, leaving visible wet spots on the casing exterior.
• Erratic gear engagement or delayed shifting: A compromised seal allows air ingress, causing hydraulic pressure loss and sluggish clutch pack response.
• Contaminated transmission fluid: Worn plugs permit dirt and moisture to enter the system, leading to accelerated wear on internal components like the 4661301093: TUBE and valve bodies.
• Audible hissing or whining from the transmission: Air drawn past a failing plug creates cavitation noise, particularly during load shifts.

Technical Specifications

Compatibility

This plug kit is specifically validated for ZF WG 90 and WG 94 series transmissions, commonly found in medium-duty trucks and industrial equipment. It is also compatible with the WG180, WG200, and WG210 models where the same port configuration is used. For proper installation, ensure the 0631306174: CYLINDRICAL PIN is correctly aligned to prevent cross-threading. Always replace the O-ring from the kit when servicing the transmission housing to maintain a leak-free seal.

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