ZF 0631.330.145 SPRING PIN for WG200 | OEM Genuine Part

Overview

The ZF 0631.330.145 SPRING PIN is a critical OEM genuine fastener engineered specifically for the WG 200 Series transmission. This precision-ground pin serves as a locating and retaining element within the shift mechanism and valve block assembly, ensuring exact alignment of internal components under high-vibration conditions. As an original ZF part, SKU 0631.330.145 guarantees the correct hardness and dimensional tolerances required for reliable long-term operation in heavy-duty industrial transmissions. It is frequently replaced alongside the 4644105424 DISCONNECTION and 4644303538 OUTPUT FLANGE during major overhauls.

Symptoms of Failure

• Intermittent gear engagement failure – A worn or sheared spring pin allows the shift fork to drift, causing delayed or missed gear selection, especially under load.
• Unusual metallic rattling from transmission housing – Loose pins create a distinct clicking or rattling noise during deceleration, indicating loss of retention in the OUTPUT FLANGE area.
• Oil seepage around shift shaft seals – A displaced spring pin can misalign the shift shaft, leading to premature seal wear and gradual fluid loss.
• Hard shifting or gear slippage – When the pin fails, the shift system loses its precise stop point, resulting in incomplete gear engagement and potential transmission damage.

Technical Specifications

Compatibility

This spring pin is a direct OEM replacement for the following ZF transmission models: WG180, WG200, and WG210 series. It is also used in certain variants of the Ecomat 4HP and 6HP families where the shift system employs a pin-retained fork design. Always verify fitment with your transmission serial number. The pin interfaces directly with the 4644101224 TRANSMISSION HOUSING and is secured by a 0636021036 HEXAGON SCREW in the final assembly.

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