ZF 0730.002.628 WASHER for WG65 | OEM Genuine Part

Overview

The ZF 0730.002.628 WASHER for WG65 is a precision-engineered OEM genuine component designed to maintain critical sealing integrity within the ZF WG 65 series transmission. This hardened steel washer sits between the TRANSMISSION HOUSING and fastener assemblies, distributing clamping loads evenly to prevent distortion and fluid bypass. As a factory-specified shim, the SKU 0730.002.628 ensures correct axial clearance for planetary gear sets and clutch packs, directly influencing shift quality and long-term durability. Its role is often overlooked, yet a compromised washer accelerates wear on adjacent seals and bearings.

Symptoms of Failure

• Transmission fluid seepage at housing joints: A deformed or corroded 0730.002.628 washer creates micro-gaps, allowing ATF to weep past the HEXAGON SCREW interfaces, leaving oily residue on the bell housing.
• Intermittent gear slipping under load: When the washer fatigues, axial play increases in the clutch drum, causing delayed engagement and momentary power loss during uphill climbs.
• Metallic rattling from the transmission pan: A fractured washer can dislodge and circulate with the oil, producing a distinct clicking noise as it contacts rotating gears.
• Hard shifting or harsh engagement: Loss of precise washer thickness alters clutch pack clearances, leading to abrupt shifts that stress the HEXAGON SCREW torque specifications.

Technical Specifications

Compatibility

This washer is engineered primarily for the ZF WG 65 series, including WG65, WG80, and WG100 models. It also fits select WG120 and WG150 transmissions where the same housing bolt pattern is used. For heavy-duty applications in WG180 and WG200 units, always verify the stack height against the HEXAGON SCREW length to avoid over-compression. The 0730.002.628 is not interchangeable with standard metric washers due to its specific chamfer and hardness rating.

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