ZF 4657.183.107 LOOSE PARTS for WG190/WG210 | OEM Genuine Part

Overview

The ZF 4657.183.107 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG190 and WG210 series transmissions. This assembly group contains the essential fasteners, seals, and positioning components required to secure internal transmission housings and fluid passages. As a loose parts package, SKU 4657.183.107 ensures that all small hardware—including cap screws, locating pins, and screen sheets—are replaced together during a major overhaul, preventing cross-threading or mismatched torque specifications. This part sits directly between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, acting as the mechanical bridge that maintains structural integrity under high torque loads.

Symptoms of Failure

When the components within the 4657.183.107 LOOSE PARTS kit begin to degrade, operators typically notice three distinct failure modes. First, transmission fluid seepage at the housing joint occurs when the cap screws lose clamping force, allowing oil to escape between the HOUSING REAR PART and the main case. Second, intermittent gear slippage under load appears when the CYLINDRICAL PIN shears or deforms, misaligning the shift rail. Third, abnormal vibration during gear engagement signals that the fixing plate has loosened, allowing axial play in the output shaft. These symptoms often escalate quickly if the loose parts are not replaced as a complete set.

Technical Specifications

Compatibility

This loose parts kit is engineered for the ZF WG series of powershift transmissions. It is a direct fit for the WG190 and WG210 models, which are commonly found in heavy-duty construction and agricultural machinery. Based on the part architecture, it is also compatible with the WG180, WG200, and WG220 series when used in conjunction with the correct TRANSMISSION HOUSING variant. Always verify the housing casting number before installation, as the HOUS.FRONT SECT and HOUSING REAR PART must match the kit’s bolt pattern.

Related Components

Frequently Asked Questions

Q: Can I reuse the old cap screws from my WG210 transmission instead of buying the 4657.183.107 kit?
A: No. ZF specifies that all cap screws in this loose parts kit must be replaced as a set due to torque-to-yield design. Reusing old fasteners risks thread galling and oil leaks at the housing joint.

Q: How do I know if the CYLINDRICAL PIN (0631306792) in this kit is the correct length for my WG190?
A: The pin length is standardized for all WG190 and WG210 variants. However, if you have a modified housing, measure the depth of the pin bore. The kit includes a single pin that matches the OEM specification for the HOUS.FRONT SECT interface.

Q: Does this kit include the screen sheets for both the high-pressure and low-pressure circuits?
A: Yes. The 4657.183.107 LOOSE PARTS set contains both the fine mesh (4657301032) and coarse mesh (4657301033) screen sheets, ensuring complete filtration coverage during reassembly.