ZF 4644.183.040 LOOSE PARTS for WG200 | OEM Genuine Part

Overview

The ZF 4644.183.040 LOOSE PARTS kit is a critical service component designed specifically for the WG 200 series transmission. This OEM genuine assembly contains the essential loose hardware and fasteners required to secure internal components during a rebuild or major repair. The SKU 4644.183.040 is typically installed in the valve body and clutch housing interface, ensuring proper clamping force and alignment of the hydraulic control circuits. Without this specific loose parts set, the transmission cannot maintain correct oil pressure distribution, leading to erratic shifting behavior.

Symptoms of Failure

• Transmission fluid seepage at the housing joint: When the 4644.183.040 loose parts degrade, the sealing surfaces lose compression, causing oil to weep from the mating flange between the 4644101249: TRANSMISSION HOUSING and the main case.
• Intermittent gear slippage under load: Worn fasteners in this kit allow the valve body to shift slightly, resulting in delayed clutch engagement and a noticeable loss of torque during acceleration.
• Metallic debris in the oil pan: Fatigue fractures in the loose parts can shed small metal particles, which circulate through the system and accelerate wear on the 0634306323: O-RING and adjacent seals.
• Hard shifting or no upshift: A loose assembly disrupts the precise alignment of the 4644301298: COVER PLATE, causing hydraulic cross-leaks that prevent proper gear changes.

Technical Specifications

Compatibility

This loose parts kit is engineered for the ZF WG 200 series, including the WG180, WG200, and WG210 variants. It is also suitable for select off-highway transmissions in the Ecolife and Ecomid range that share the same valve body architecture. The 4644.183.040 kit integrates directly with the 4644101249: TRANSMISSION HOUSING and the 4644301402: TRANSMISSION HOUSING to restore factory clamping force. Always verify your transmission serial number before ordering.

Related Components