ZF 4644.306.320 ADAPTER for WG65 | OEM Genuine Part

Overview

The ZF 4644.306.320 ADAPTER is a precision-machined component designed for the WG 65 Series transmission family. This OEM genuine part serves as the critical interface between the transmission housing and the output assembly, ensuring correct alignment and oil sealing within the drivetrain. The SKU 4644.306.320 is engineered to withstand high torsional loads and thermal expansion, making it essential for maintaining gear mesh accuracy. When installed alongside the 4616105413: OUTPUT and the 4616203017: OUTPUT FLANGE, this adapter guarantees a rigid connection that prevents misalignment during heavy-duty operation.

Symptoms of Failure

When the ZF 4644.306.320 adapter begins to degrade, operators may notice these specific failure indicators:

• Oil seepage at the rear seal interface – Worn adapter surfaces cause lubricant to escape, leading to low fluid levels and potential gear damage.
• Vibration during gear engagement – A loose or cracked adapter allows the output shaft to wobble, producing audible knocking sounds under load.
• Premature wear on the output flange splines – Misalignment from a failing adapter accelerates spline stripping, requiring replacement of both the adapter and the 4616203017: OUTPUT FLANGE.
• Intermittent gear slipping – Loss of axial clearance control causes the clutch packs to engage inconsistently, reducing torque transfer efficiency.

Technical Specifications

Compatibility

This adapter is specifically validated for the ZF WG 65 Series, including models WG65, WG80, WG100, WG120, WG150, WG180, and WG200. It directly interfaces with the 4616101117: TRANSMISSION HOUSING and is secured using 0636011038: HEXAGON SCREW fasteners. For complete assembly, ensure the mating surfaces are free of debris and that all bolts are torqued to ZF specifications (85 Nm).

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