ZF 0635.290.002 AXIAL WASHER for WG94 | OEM Genuine Part

Overview

The ZF 0635.290.002 AXIAL WASHER is a precision-engineered thrust washer designed to manage axial loads and maintain critical clearances within the WG94 series transmission. Positioned between rotating shafts and stationary housings, this OEM genuine part prevents metal-to-metal contact under high torque conditions. The SKU 0635.290.002 is factory-specified for the WG94 planetary gear set, ensuring consistent oil film distribution across the thrust face. When installed alongside the 4661101018: TRANSMISSION HOUSING, this washer stabilizes the shaft assembly, reducing vibration and extending clutch pack life.

Symptoms of Failure

• Low-frequency growling during acceleration: A worn axial washer allows excessive end-play, causing the gear train to oscillate and generate a deep rumbling noise under load.
• Intermittent gear engagement delay: As the washer thins, hydraulic pressure drops in the clutch circuits, leading to hesitation when shifting from Neutral to Drive or Reverse.
• Metallic debris in transmission fluid: Flaking from a degraded washer surface contaminates the oil, often visible as silver particles on the dipstick or during a drain.
• Oil seepage at the housing joint: Excessive axial movement can distort the 4661301050: HOUSING II seal surface, causing slow leaks around the bellhousing area.

Technical Specifications

Compatibility

This axial washer is a direct-fit component for the ZF WG94 series transmission. It is also compatible with the WG180, WG200, and WG240 models where the same thrust bearing arrangement is used. The washer interfaces with the 4661301093: TUBE for oil routing and is secured by the 0631306174: CYLINDRICAL PIN to prevent rotation. Always verify the stack height when replacing this washer to maintain proper preload on the planetary carrier.

Related Components