ZF 4616.305.006 WASHER for WG 65 | OEM Genuine Part

Overview

The ZF 4616.305.006 WASHER for WG 65 is a precision-engineered sealing component designed to maintain critical oil pressure integrity within the WG 65 series transmission. This OEM genuine part, identified by SKU 4616.305.006, sits between the transmission housing and the valve body assembly, preventing fluid migration and ensuring consistent hydraulic actuation. As a hardened steel washer, it distributes clamping force evenly when paired with fasteners like the 0636011038: HEXAGON SCREW, reducing the risk of surface deformation on the 4616101059: TRANSMISSION HOUSING. Without this washer, the assembly cannot achieve the specified torque retention required for high-load commercial vehicle operations.

Symptoms of Failure

• Hydraulic pressure drop during gear shifts: A worn or crushed 4616.305.006 washer allows the valve body to shift, causing delayed engagement or soft shifts under load.
• External oil seepage at housing joints: When the washer loses its flatness, oil escapes past the 0636011118: HEXAGON SCREW interfaces, leaving visible residue on the transmission bell housing.
• Increased transmission operating temperature: Internal fluid bypass due to washer failure reduces lubrication efficiency, leading to thermal stress on clutch packs.
• Vibration at the mounting flange: Uneven washer compression creates micro-movement between the housing and valve body, transmitting noise through the driveline.

Technical Specifications

Compatibility

This washer is engineered for the ZF WG 65 series, but its dimensions and load rating also suit other ZF off-highway transmissions. Compatible models include the WG 65, WG 80, WG 100, WG 120, WG 150, WG 180, and WG 200 series. It is commonly used in torque converter-to-housing joints and valve body mounting points. For complete assembly integrity, always pair this washer with the 0636016015: HEXAGON SCREW to achieve the factory torque specification of 45 Nm.

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