ZF 2095.103.021 COUNTERSHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2095.103.021 COUNTERSHAFT is a critical torque-transfer component within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part serves as the intermediary shaft that synchronizes gear rotation between the input and output stages, ensuring smooth power delivery under heavy load conditions. The SKU 2095.103.021 is precision-machined to ZF’s exacting tolerances, directly interfacing with the 2095109016 DIFFERENTIAL to distribute rotational force evenly. It sits centrally in the gear train, supported by the 0750117075 TAPER ROLLER BEARING, which absorbs axial and radial loads during operation.

Symptoms of Failure

• Grinding noise during gear engagement: A worn countershaft produces a metallic grinding sound, particularly when shifting between low and high ranges, indicating spline or bearing surface degradation.
• Vibration under acceleration: Excessive play in the countershaft causes driveline shudder at 30-50 mph, often misdiagnosed as a universal joint issue.
• Oil contamination with metallic debris: Flaking from the countershaft’s hardened surface mixes with transmission fluid, visible as silver particles on the dipstick or drain plug.
• Intermittent gear slipping: When the countershaft’s alignment shifts, the 2095209037 DIFFERENTIAL may lose mesh, causing momentary loss of drive power under load.

Technical Specifications

Compatibility

This countershaft is engineered for ZF’s WG-series powershift transmissions, specifically the WG100, WG130, and WG131 models. It also fits select WG180 and WG200 variants where the countershaft length matches the 412 mm specification. The part integrates with the 2095309059 DIFF.HOUSING to maintain gear spacing. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.

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