ZF 4651.364.004 COVER for WG 100/WG 110 | OEM Genuine Part

Overview

The ZF 4651.364.004 COVER is a critical sealing and protective component designed for the WG 100 and WG 110 transmission series. This OEM genuine part sits at the rear or intermediate housing interface, serving as a barrier against contaminants while maintaining internal oil pressure. The SKU 4651.364.004 ensures a precise fit within the transmission assembly, directly interfacing with the 4644101160: TRANSMISSION HOUSING to create a sealed environment for the gear train. By securing the internal lubrication system, this cover prevents debris ingress and supports consistent hydraulic function across demanding industrial applications.

Symptoms of Failure

• Oil seepage around the housing joint: When the 4651.364.004 cover gasket surface degrades, transmission fluid may weep from the mating line between the cover and the 4644301323: TRANSMISSION HOUSING, leaving visible residue on the casing.
• Intermittent gear slippage under load: A compromised cover can cause pressure loss in the hydraulic circuit, leading to delayed engagement or slipping during torque transfer.
• Contaminated transmission fluid: Cracks or warping in the cover allow dirt and moisture to enter the system, resulting in gritty or discolored oil that accelerates internal wear.
• Increased operating noise: A loose or distorted cover may vibrate against adjacent components, producing a distinct rattle or hum during gear shifts.

Technical Specifications

Compatibility

This cover is engineered for ZF WG-series transmissions, specifically the WG 100 and WG 201 series. It is a direct replacement for models including WG 100, WG 110, WG 180, and WG 200. The part also fits select WG 120 and WG 150 variants where the housing interface matches the 170 mm bolt pattern. Always verify the presence of the 4644301189: THREADED BUSH and 4475280043: SCREW PLUG in your assembly, as these fasteners are required for proper installation of the 4651.364.004 cover.

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