ZF 4657.199.034 LOOSE PARTS for WG190 | OEM Genuine Part

Overview

The ZF 4657.199.034 LOOSE PARTS for WG190 is a critical OEM genuine assembly component designed to secure and align internal transmission elements within the WG 190, WG 210, and WG 230 series. This part functions as a retention and positioning kit, ensuring that key sub-assemblies remain stable under high torque and vibration loads. The SKU 4657.199.034 is engineered to interface directly with the 4657101031: TRANSMISSION HOUSING, providing a precise fit that prevents axial movement and maintains gear mesh integrity. Without this loose parts set, the transmission’s internal architecture can shift, leading to premature wear and operational inefficiency.

Symptoms of Failure

• Oil leaks at housing joints: When the 4657.199.034 assembly wears, it fails to maintain proper sealing pressure between the 4657201027: HOUS.FRONT SECT and the main casing, causing transmission fluid seepage.
• Gear slipping under load: Worn loose parts allow the 4657201020: HOUSING REAR PART to shift, resulting in intermittent power loss and erratic shifting behavior.
• Abnormal vibration during acceleration: Degraded retention components fail to secure the 0631306792: CYLINDRICAL PIN, leading to misalignment and resonant vibrations in the drivetrain.
• Metallic grinding noises: As the loose parts lose their clamping force, internal gears contact housing walls, producing audible scraping sounds during operation.

Technical Specifications

Compatibility

This OEM genuine part is engineered for the ZF WG 190, WG 210, and WG 230 series transmissions. It is also compatible with the WG180 and WG200 models when used in conjunction with the correct 4657201027: HOUS.FRONT SECT and 4657201020: HOUSING REAR PART. The 4657.199.034 kit is not recommended for use in WG150 or WG250 series without verifying housing geometry. Always confirm fitment by cross-referencing the 4657101031: TRANSMISSION HOUSING part number.

Related Components

Frequently Asked Questions

Q: Can I install the 4657.199.034 loose parts without replacing the transmission housing?
A: Yes, but we strongly recommend inspecting the 4657101031: TRANSMISSION HOUSING for wear or cracks. If the housing shows any deformation, the new loose parts may not seat correctly.

Q: What is the typical service interval for this part in a WG190 transmission?
A: Under normal operating conditions, the 4657.199.034 assembly should be inspected every 100,000 km or during any major transmission overhaul. Symptoms like oil leaks or vibration indicate immediate replacement is needed.

Q: Does this kit include the cylindrical pin and cap screws?
A: No, the 4657.199.034 LOOSE PARTS set does not include the 0631306792: CYLINDRICAL PIN or cap screws. These must be ordered separately using the related parts listed above.