ZF 4616.199.128 LOOSE PARTS for WG65 | OEM Genuine Part

Overview

The ZF 4616.199.128 LOOSE PARTS for WG65 is a critical OEM genuine component designed to maintain the integrity of the ZF WG 65 transmission series. This assembly-specific kit includes the necessary loose hardware and seals that secure internal components within the gearbox housing. As a precision-engineered part, the 4616.199.128 ensures proper alignment and torque retention during high-load operations. It is typically installed during a rebuild or overhaul to replace worn fasteners and spacers that can compromise the transmission’s structural stability. This part works in conjunction with the 4616105415: OUTPUT and the 4616101094: TRANSMISSION HOUSING to form a leak-proof, vibration-resistant assembly.

Symptoms of Failure

• Transmission oil leaks at the rear seal area: When the loose parts kit degrades, the sealing surfaces around the output shaft can fail, leading to visible drips or puddles of ATF fluid beneath the vehicle.
• Abnormal gear slippage during load shifts: Worn or missing fasteners from this kit can cause internal components to shift, resulting in delayed engagement or slipping between gear ratios.
• Excessive driveline vibration: If the 0636011038: HEXAGON SCREW or similar hardware loosens, the output flange may wobble, creating a rhythmic vibration that intensifies with speed.
• Difficulty maintaining hydraulic pressure: A compromised loose parts kit can allow internal leakage, reducing clutch pack pressure and causing erratic shifting behavior.

Technical Specifications

Compatibility

This genuine ZF 4616.199.128 loose parts kit is engineered primarily for the WG 65 Series transmissions. Based on its design and fastener configuration, it is also compatible with the following ZF models: WG180, WG200, and WG250. It is commonly used in medium-duty trucks, buses, and construction equipment where the WG65 gearbox is installed. When replacing this kit, always verify the condition of the 4616303144: OUTPUT FLANGE to ensure proper torque distribution across the assembly.

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