ZF 4657.199.027 LOOSE PARTS for WG210 | OEM Genuine Part

Overview

The ZF 4657.199.027 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 210 series transmission. This genuine OEM part consolidates essential wear components that secure and align internal hydraulic and mechanical systems within the gearbox. Positioned within the main valve body and clutch housing interface, the 4657.199.027 ensures precise oil flow control and structural integrity during high-torque operations. As a loose parts set, it replaces multiple individual fasteners and spacers that degrade over time, restoring factory tolerances. The SKU 4657.199.027 is engineered to match original ZF specifications, eliminating guesswork during rebuilds or major overhauls.

Symptoms of Failure

• Intermittent gear slipping under load: When the 4657.199.027 components loosen, valve body alignment shifts, causing delayed clutch engagement and power loss during acceleration.
• External oil seepage from housing seams: Worn loose parts allow vibration that compromises sealing surfaces, leading to visible fluid leaks around the transmission bell housing and rear cover.
• Erratic shift quality and harsh engagement: Degraded fasteners in this kit create micro-movements in the oil feed circuits, resulting in inconsistent hydraulic pressure and jarring gear changes.
• Metallic debris in transmission fluid: As the loose parts fatigue, they generate fine metal particles from fretting against the TRANSMISSION HOUSING and adjacent bores.

Technical Specifications

Compatibility

This loose parts kit is primarily validated for the WG 210 Series transmission. Based on shared architecture, it also fits the WG 180, WG 200, and WG 250 models when used with the corresponding HOUS.FRONT SECT and HOUSING REAR PART. Always verify alignment with the CYLINDRICAL PIN during installation to ensure correct dowel engagement. The 4657.199.027 is not backward-compatible with pre-1990 ZF models without adapter modifications.

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