ZF 4657.183.240 LOOSE PARTS for WG211 | OEM Genuine Part

Overview

The ZF 4657.183.240 LOOSE PARTS kit is a critical service assembly for the WG211 series transmission, specifically designed to replace the internal fasteners, retainers, and small hardware that secure the main housing sections together. This genuine OEM part, identified by SKU 4657.183.240, sits at the interface between the HOUS.FRONT SECT and the HOUSING REAR PART, ensuring the entire gear train remains rigidly aligned under high torque loads. Without this hardware set, the TRANSMISSION HOUSING cannot maintain proper bearing preload, leading to premature wear of internal components.

Symptoms of Failure

• Transmission oil weeping from mating flanges: When the loose parts kit degrades, the clamping force between housing sections drops, allowing ATF to seep past the gasket surface.
• Audible gear rattle or clunking during load changes: Worn or missing CYLINDRICAL PIN alignment allows the rear housing to shift slightly, creating backlash noise.
• Intermittent loss of drive pressure: A loose front section can cause the oil pump pickup to misalign, resulting in erratic line pressure and delayed engagement.
• Vibration at highway speeds: Uneven bolt tension from degraded hardware allows the housing to flex, transmitting driveline vibration into the chassis.

Technical Specifications

Compatibility

This genuine OEM loose parts kit is engineered primarily for the ZF WG211 series, but it also cross-fits the WG180 and WG200 transmission families where the front and rear housing interface dimensions match. It is not compatible with the older WG120 series or the heavy-duty WG250 models without verifying the bolt pattern. Always confirm your transmission serial number against the ZF parts catalog before ordering.

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