ZF 4644.183.083 LOOSE PARTS for WG200 | OEM Genuine Part

Overview

The ZF 4644.183.083 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 200 series transmission. This genuine OEM part consolidates essential small components—including seals, fasteners, and locating elements—that are necessary for maintaining internal hydraulic pressure and mechanical alignment within the gearbox. Positioned within the valve body and clutch pack region, the SKU 4644.183.083 ensures that loose hardware does not migrate into rotating assemblies, preventing catastrophic damage. When paired with a new 4644101249 TRANSMISSION HOUSING or a 4644301402 TRANSMISSION HOUSING, this kit restores the original factory tolerances required for reliable power flow.

Symptoms of Failure

• Intermittent gear slippage under load: When the loose parts wear or become dislodged, hydraulic pressure drops, causing the WG200 to slip between second and third gear during uphill climbs.
• Visible oil seepage from the bell housing: Deteriorated O-rings and fasteners within the 4644.183.083 kit lead to external leaks, often mistaken for a main seal failure.
• Harsh or delayed engagement: Worn locating pins or loose bolts allow the valve body to shift, resulting in a jarring shift from Park to Drive.
• Metallic rattling from the transmission pan: Broken or missing hardware inside the sump indicates that the loose parts assembly has failed, requiring immediate replacement.

Technical Specifications

Compatibility

This genuine OEM loose parts kit is engineered for the ZF WG 200 series transmission family. It is directly compatible with WG200, WG180, and WG150 models that share the same valve body and clutch housing architecture. The 4644.183.083 also fits select WG210 variants where the internal fastener pattern matches. For proper installation, always verify that the 4644301298 COVER PLATE is seated correctly, and replace the 0634306323 O-RING simultaneously to prevent cross-threading.

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