ZF 0630.302.042 SPRING WASHER for WG65 | OEM Genuine Part

Overview

The ZF 0630.302.042 SPRING WASHER is a precision-engineered OEM genuine component designed for the WG65 transmission series. This critical fastener element sits directly beneath the bolt head or nut within the transmission housing assembly, providing consistent axial load and preventing loosening under high-vibration conditions. As a Belleville-style washer, the SKU 0630.302.042 maintains clamping force on mating surfaces, ensuring that adjacent hardware such as the 0636011038 HEXAGON SCREW remains secure during torque fluctuations. Without this spring washer, the integrity of the entire clutch pack and gear train assembly is compromised.

Symptoms of Failure

• Transmission oil weeping from bolt interfaces: When the spring washer loses its elasticity, the 0636011118 HEXAGON SCREW can back off slightly, allowing pressurized ATF to seep past the sealing ring.
• Intermittent gear engagement or slipping: A collapsed spring washer reduces preload on the TRANSMISSION HOUSING flanges, leading to micro-movement that disrupts shift timing.
• Abnormal metallic rattling from the bell housing: Loose fasteners caused by a fatigued spring washer produce a distinct chatter during acceleration or deceleration.
• Torque converter bolt loosening: A worn 0630.302.042 can cause the 0636016015 HEXAGON SCREW to lose retention, resulting in driveline vibration and potential converter damage.

Technical Specifications

Compatibility

This spring washer is specifically engineered for the ZF WG65 transmission series. Based on its dimensional profile and load rating, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. The 0630.302.042 is used in both on-highway truck and off-highway industrial applications where the WG65 gearbox is deployed. Always verify fitment against your transmission’s parts catalog, as the washer may also appear in auxiliary drive assemblies for WG120 and WG150 variants.

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