ZF 4644.199.393 LOOSE PARTS for WG201 | OEM Genuine Part

Overview

The ZF 4644.199.393 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG 201 series transmission. This assembly contains the essential loose components required to maintain the internal sealing and structural integrity of the gearbox housing. Positioned within the main casing assembly, the 4644.199.393 kit ensures that the 4644101160 TRANSMISSION HOUSING and the 4644301323 TRANSMISSION HOUSING remain properly sealed against fluid loss and contamination. Each component in this SKU 4644.199.393 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification.

Symptoms of Failure

When the loose parts in this kit degrade, operators often notice oil seepage around the housing mating surfaces, a classic sign that the included seals or gaskets have hardened. Another frequent failure symptom is intermittent gear slippage under load, caused by worn internal fasteners that allow slight housing movement. You may also detect unusual metallic rattling from the bell housing area, indicating that a loose threaded component has backed out. Finally, erratic shift timing or delayed engagement can occur when the 4644301189 THREADED BUSH loses its clamping force, altering internal clearances.

Technical Specifications

Compatibility

This 4644.199.393 loose parts kit is engineered for the ZF WG 201 transmission family, which includes the WG180, WG200, and WG210 models. It also applies to the WG 200 Series and select WG 180 variants where the housing design matches the 4475280043 SCREW PLUG interface. Always verify your transmission’s serial number against the OEM parts catalog to confirm fitment, as minor revisions exist between early and late production units.

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