ZF 4657.183.351 LOOSE PARTS for WG190 | OEM Genuine Part

Overview

The ZF 4657.183.351 LOOSE PARTS set is a critical service kit designed for the WG 190 Series transmission. This genuine OEM assembly includes the necessary fasteners, seals, and positioning components required to secure internal sub-assemblies within the gearbox housing. Specifically, this part number (SKU: 4657.183.351) functions as the retention hardware for the clutch drum and planetary gear sets, ensuring precise axial alignment under high torque loads. Without this loose parts kit, the transmission cannot maintain proper gear mesh geometry, leading to accelerated wear on adjacent components.

Symptoms of Failure

When the ZF 4657.183.351 LOOSE PARTS begin to degrade, operators will notice distinct operational issues. Oil leaks at the housing seam are the most common early indicator, as the gaskets and sealing washers in this kit lose their elasticity. Intermittent gear slipping during load shifts occurs when the retaining bolts loosen, allowing clutch packs to shift out of alignment. A third symptom is abnormal vibration in the 3rd and 4th gear range, caused by loose fasteners allowing planetary carrier movement. Finally, metal debris in the transmission pan signals that the fixing plates have fatigued and are grinding against the housing walls.

Technical Specifications

Compatibility

This loose parts kit is specifically engineered for the WG 190 Series transmission family. It is also compatible with the WG180 and WG200 models that share the same housing architecture. The kit interfaces directly with the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT. For complete rear section assembly, technicians will also require the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION. Always verify your transmission serial number before ordering.

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