ZF 0636.610.225 STUD for WG201 | OEM Genuine Part

Overview

The ZF 0636.610.225 STUD is a precision-machined fastening component engineered specifically for the WG 201 series transmission. This OEM genuine part functions as a critical locating and securing element within the transmission housing assembly, ensuring proper alignment of internal components under high-torque conditions. The SKU 0636.610.225 identifies this stud as an original ZF replacement, designed to maintain the exact clamping force and positional accuracy required for reliable gear engagement. It is typically installed in conjunction with the 4644101203: TRANSMISSION HOUSING and the 4644301382: TRANSMISSION HOUSING to secure the main casing structure.

Symptoms of Failure

• Transmission oil seepage around mounting points: A worn or stretched stud can compromise the seal between the housing and cover, leading to slow fluid loss.
• Abnormal gear engagement noise or vibration: When the stud loses its clamping integrity, internal shaft alignment shifts, producing a distinct rattle during acceleration.
• Difficulty maintaining gear position under load: A failing stud allows micro-movement of the housing, causing intermittent slipping or delayed shifts in the WG201 series.
• Visible thread galling or corrosion on the stud shank: This indicates material fatigue that can lead to sudden fastener failure during operation.

Technical Specifications

Compatibility

This stud is primarily designed for the ZF WG 201 series transmissions, including models WG180, WG200, and WG210. It is also used in select WG211 and WG220 variants that share the same housing bolt pattern. The part interfaces directly with the 4644301189: THREADED BUSH and the 0636302005: SCREW PLUG to secure auxiliary housing ports. For applications requiring a different thread pitch, the 0631311009: GROOVED STUD offers an alternative mounting solution.

Related Components