ZF 4657.183.260 LOOSE PARTS for WG190 | OEM Genuine Part

Overview

The ZF 4657.183.260 LOOSE PARTS kit is a critical service component engineered specifically for the WG 190 Series transmission. This genuine OEM assembly contains the essential fasteners, seals, and positioning elements required to secure internal sub-assemblies within the gearbox housing. As a loose parts set, it ensures that the TRANSMISSION HOUSING maintains proper alignment with the HOUS.FRONT SECT and the HOUSING REAR PART. The SKU 4657.183.260 is frequently ordered during a full transmission rebuild to replace worn or corroded hardware that can no longer guarantee clamping force.

Symptoms of Failure

• Intermittent gear slippage under load: When the loose parts kit hardware fatigues, the HOUSING REAR SECTION may shift slightly, causing clutch pack clearance issues and erratic shifting behavior.
• External oil seepage at housing seams: Degraded sealing elements within the 4657.183.260 kit allow transmission fluid to weep between the front and rear housing joints, leaving visible drips on the bell housing.
• Abnormal driveline vibration: Loose fasteners permit micro-movement of the housing sections, which transmits as a low-frequency shudder through the chassis during acceleration.
• Increased internal debris in oil pan: Worn retaining clips or pins from this kit can break free and circulate, contaminating the hydraulic circuit and accelerating valve body wear.

Technical Specifications

Compatibility

This genuine loose parts kit is primarily designed for the ZF WG 190 transmission series. Based on its structural role, it also applies to the WG 180 and WG 200 models that share the same housing architecture. The 4657.183.260 set interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, making it suitable for on-highway trucks, construction equipment, and industrial powertrains using these ZF gearboxes. Always verify your transmission serial number before ordering.

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