ZF 4646.199.062 LOOSE PARTS for WG250 | OEM Genuine Part

Overview

The ZF 4646.199.062 LOOSE PARTS kit is a critical OEM genuine assembly designed specifically for the WG 250 series transmission. This kit consolidates essential fasteners, seals, and positioning components that secure internal sub-assemblies within the gearbox housing. As a loose parts set, it replaces individual worn or missing hardware that can compromise the structural integrity of the transmission. The SKU 4646.199.062 is engineered to match factory tolerances, ensuring that mating surfaces between the TRANSMISSION HOUSING and the HOUSING remain properly aligned under load. This part is often ordered during a full rebuild or when addressing vibration issues in the WG250 gear train.

Symptoms of Failure

When the 4646.199.062 LOOSE PARTS kit begins to degrade, operators typically notice three distinct failure modes. First, intermittent gear slippage occurs as fasteners loosen, allowing the CONNECTING PART to shift out of alignment. Second, oil seepage at housing joints becomes visible around the perimeter of the COVER, indicating that the included gaskets or seals have lost compression. Third, audible rattling during low-speed operation suggests that loose hardware is vibrating against internal walls. These symptoms often appear together, making the 4646.199.062 kit a common first replacement before addressing more complex internal damage.

Technical Specifications

Compatibility

This loose parts kit is primarily designed for the ZF WG 250 series, but it also fits select models in the WG180 and WG200 families due to shared housing bolt patterns. The 4646.199.062 is commonly used in WG250 transmissions found in medium-duty trucks, construction loaders, and agricultural tractors. For exact fitment, verify that your transmission housing matches the bolt circle of the TRANSMISSION HOUSING (part 4646101062). The kit is not backward-compatible with older WG120 series units without adapter plates.

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