ZF 4143.303.092 BEARING COVER for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.303.092 BEARING COVER is a precision-machined component designed to seal and protect the bearing assembly within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part, identified by SKU 4143.303.092, sits at the interface between the bearing housing and the transmission case, preventing contamination ingress and retaining lubrication. It works in concert with the 4143101025: HOUSING to ensure the bearing remains securely positioned under high torque loads. Without this cover, the bearing would be exposed to debris and premature wear, compromising drivetrain reliability.

Symptoms of Failure

When the ZF 4143.303.092 bearing cover degrades, operators may notice these specific failure indicators:

• Oil leaks around the bearing housing — A worn or cracked cover allows transmission fluid to seep past the seal, leaving visible drips under the vehicle or machine.
• Gear slipping or delayed engagement — Loss of bearing preload due to cover deformation can cause shaft misalignment, leading to erratic shifting.
• Unusual bearing noise (grinding or whining) — Contaminants entering through a compromised cover accelerate bearing wear, producing audible distress during operation.
• Increased vibration at the transmission housing — A loose or damaged cover fails to dampen bearing movement, transmitting vibration to the 4143298040: CASE.

Technical Specifications

Compatibility

This bearing cover is engineered for ZF’s modular transmission family, specifically fitting the following models: WG100, WG130, WG131, WG180, WG200, WG210, HL 100 Series, and HL 270 Series. It also integrates with the 4143301055: HOUSING in certain WG180 builds. For secure mounting, pair it with a 0631329135: SPRING PIN to align the cover during assembly. Always verify your transmission’s serial number before ordering.

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