ZF 4644.183.131 LOOSE PARTS for WG200 | OEM Genuine Part

Overview

The ZF 4644.183.131 LOOSE PARTS assembly is a critical internal component set designed specifically for the WG 200 Series transmission. This genuine OEM part serves as a collection of precision-engineered fasteners, spacers, and retainers that secure key hydraulic and mechanical elements within the gearbox housing. Positioned directly inside the main casing, the 4644.183.131 ensures that adjacent assemblies—such as the 4644101249: TRANSMISSION HOUSING and the 4644301402: TRANSMISSION HOUSING—remain properly aligned under high-torque loads. Without this loose parts kit, the transmission’s internal clearances can shift, leading to premature wear of the 4644301298: COVER PLATE and failure of the 0634306323: O-RING seals.

Symptoms of Failure

• Intermittent gear slippage under load: When the 4644.183.131 loose parts degrade, the valve body and clutch pack can shift out of position, causing erratic engagement in 3rd and 4th gears.
• External oil seepage at housing joints: Worn or missing loose parts allow the 0634306323: O-RING to lose compression, resulting in visible fluid leaks around the bell housing and adapter plate.
• Metallic rattling from the transmission sump: Broken retainers or spacers can fall into the oil pan, producing a distinct clattering noise during idle or low-speed maneuvers.
• Delayed shift engagement after cold start: Loose components disrupt oil flow paths, causing a 2–3 second hesitation before the transmission engages Drive or Reverse.

Technical Specifications

Compatibility

This genuine ZF 4644.183.131 loose parts kit is engineered for the WG 200 Series transmissions, including models WG180, WG200, and WG210. It is also backward-compatible with select WG150 variants that share the same housing bolt pattern. Always verify the 4644101249: TRANSMISSION HOUSING and 4644301402: TRANSMISSION HOUSING part numbers to confirm fitment. The kit does not apply to ZF 4HP or 5HP automatic series.

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