ZF 0501.319.707 NILOS RING | OEM Genuine Part

Overview

The ZF 0501.319.707 NILOS RING is a precision-engineered sealing component designed to protect the internal assemblies of heavy-duty ZF transmissions used in construction machinery. This OEM genuine part, identified by SKU 0501.319.707, functions as a labyrinth-style axial seal, preventing lubricant leakage and blocking contaminants from entering the gear train. It is typically positioned between rotating shafts and stationary housings within the transmission’s planetary gear sets, ensuring consistent oil film integrity under high torque and vibration. For optimal sealing performance, this Nilos Ring is often installed alongside the 4699100023: BASIC PARTS kit, which includes necessary gaskets and fasteners.

Symptoms of Failure

• Transmission oil leaks around the housing: A worn Nilos Ring allows pressurized oil to escape, leaving visible drips or wet spots near the 4699300138: HOUSING interface.
• Gear slipping under load: Loss of lubrication pressure due to a failed seal causes insufficient oil film on the 4699300156: GEAR SHAFT, leading to intermittent power loss.
• Contaminated transmission fluid: Debris ingress through a degraded Nilos Ring accelerates wear on the 4699300127: PLANET CARRIER, resulting in gritty or discolored oil.
• Increased operating noise: Metal-to-metal contact from insufficient lubrication produces whining or grinding sounds during gear shifts.

Technical Specifications

Compatibility

This Nilos Ring is engineered for ZF power shift transmissions commonly deployed in construction machinery, including wheel loaders, excavators, and graders. It is directly compatible with the following ZF transmission models: WG180, WG200, WG210, and WG310. The part also fits select variants of the 4WG-200 and 6WG-310 series. Always verify your transmission’s serial number against the OEM parts catalog to confirm fitment.

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