ZF 4657.183.355 LOOSE PARTS for WG210 | OEM Genuine Part

Overview

The ZF 4657.183.355 LOOSE PARTS kit is a critical service assembly designed for the WG 210 series transmission. This genuine OEM component set includes all necessary fasteners, seals, and small hardware required to secure and seal the main transmission housing sections during a rebuild or overhaul. Specifically, the 4657.183.355 SKU provides the loose hardware that interfaces between the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT, ensuring proper clamping force and oil containment. Without this kit, reassembly of the WG210 gearbox is impossible, as it contains the precise bolts, pins, and locating elements that maintain structural integrity under high torque loads.

Symptoms of Failure

When the loose parts in the 4657.183.355 kit wear out or are lost during service, operators typically experience these specific failure modes:

• External oil seepage at housing joints – Missing or degraded fasteners allow the 4657201170: HOUSING REAR PART to shift, breaking the seal and causing fluid loss.
• Gear engagement hesitation or slipping – Loose hardware permits micro-movement between the 4657298102: HOUSING REAR SECTION and the main case, misaligning shift forks and clutches.
• Abnormal vibration during load shifts – Worn locating pins or bolts fail to maintain concentricity, leading to driveline shudder under 2nd-to-3rd gear transitions.
• Increased metallic debris in oil pan – Fretting corrosion from loose mating surfaces generates fine steel particles that contaminate the hydraulic circuit.

Technical Specifications

Compatibility

This genuine ZF loose parts kit is engineered primarily for the WG 210 transmission series. Based on the hardware geometry, it also fits the WG180 and WG200 models when used with the corresponding TRANSMISSION HOUSING. The kit is not backward-compatible with pre-2005 ZF Ecomat units due to different bolt patterns. Always verify the housing casting number before ordering; the 4657.183.355 is specifically matched to the HOUS.FRONT SECT and HOUSING REAR PART interfaces.

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