ZF 0736.304.136 SCREW PLUG for WG200/WG250 | OEM Genuine Part

Overview

The ZF 0736.304.136 SCREW PLUG is a precision-engineered sealing component designed for the WG 200 and WG 250 series transmissions. This OEM genuine part serves as a critical closure point within the transmission housing, preventing fluid loss and maintaining internal pressure integrity. Installed directly into the TRANSMISSION HOUSING, the SKU 0736.304.136 ensures that hydraulic circuits remain sealed during high-torque operations. Its robust construction withstands extreme thermal cycling and vibration, making it indispensable for heavy-duty industrial applications where even minor leaks can lead to costly downtime.

Symptoms of Failure

• Hydraulic fluid seepage around the plug threads: When the screw plug wears or its sealing surface degrades, you may notice oil weeping from the housing joint, often visible as dark residue on the transmission exterior.
• Intermittent pressure drops during gear engagement: A failing plug can cause gradual pressure loss in the valve block, leading to delayed or harsh shifting in WG200/WG250 units.
• Contamination ingress at the plug site: Worn threads allow dirt and moisture to enter the transmission, accelerating wear on internal components like the OUTPUT FLANGE and shift systems.
• Audible hissing or whistling from the plug location: Air escaping past a compromised seal produces a distinct noise under load, indicating immediate replacement is needed.

Technical Specifications

Compatibility

This screw plug is specifically engineered for ZF WG 200 and WG 250 series transmissions, including the WG180, WG200, WG210, and WG250 variants. It directly interfaces with the DISCONNECTION assembly and the HEXAGON SCREW fasteners used in the same housing section. Always verify thread compatibility with your specific transmission model before installation.

Related Components