ZF 2002.346.166 SPACER RING | OEM Genuine Part

Overview

The ZF 2002.346.166 SPACER RING is a precision-engineered OEM genuine component designed to maintain critical axial clearances within ZF heavy-duty transmissions. Positioned between gear sets and bearing assemblies, this spacer ring ensures correct preload and alignment of rotating elements. The SKU 2002.346.166 is specifically used in construction machinery transmissions where high torque loads demand exact dimensional stability. Without this ring, gear mesh patterns shift, leading to accelerated wear on adjacent components like the 5838109007 DIFFERENTIAL and 0750117075 TAPER ROLLER BEARING.

Symptoms of Failure

• Transmission oil leaks at shaft seals: A worn spacer ring allows axial movement, distorting seal contact surfaces and causing fluid seepage.
• Gear slipping under load: Loss of correct spacer thickness reduces clutch pack clamping force, resulting in intermittent power loss during excavation or grading.
• Metallic grinding noise from differential area: When the ring collapses, the 2095209019 DIFFERENTIAL housing may contact the transmission casing.
• Premature bearing failure: Incorrect end-play from a deformed spacer ring overloads the 0631329086 SPRING PIN and adjacent roller bearings.

Technical Specifications

Compatibility

This spacer ring is engineered for ZF WG-series transmissions commonly found in construction machinery. Verified compatible models include WG180, WG200, WG210, and WG240 series. It also integrates with certain off-highway truck transmissions using the ZF 4WG-200 platform. For differential-specific applications, always cross-reference with the 5838300682 DIFFERENTIAL AXLE assembly.

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