ZF 0501.327.778 INNER CLUTCH DISK for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 0501.327.778 INNER CLUTCH DISK is a critical friction component engineered for the WG100, WG130, and WG131 transmission series. Positioned within the clutch pack assembly, this OEM genuine part transfers torque between rotating shafts during gear engagement, ensuring smooth power delivery and reliable load holding. The SKU 0501.327.778 is manufactured to ZF’s exacting tolerances, using high-temperature friction materials to withstand the thermal stress of repeated shifting in heavy-duty industrial applications. When paired with a 2095109009 DIFFERENTIAL, this disk maintains consistent hydraulic pressure distribution across the clutch pack.

Symptoms of Failure

• Delayed or harsh gear engagement: Worn friction material causes the clutch to slip before fully locking, resulting in a noticeable lag or jolt when shifting into forward or reverse.
• Transmission overheating: Excessive slippage from a degraded inner clutch disk generates abnormal heat, often triggering thermal warning lights or burnt oil smells.
• Erratic hydraulic pressure fluctuations: As the disk surface wears unevenly, the clutch pack fails to seal properly, leading to pressure drops that mimic pump failure.
• Metallic debris in transmission fluid: Advanced wear releases friction material particles into the oil, which can contaminate the 0750117075 TAPER ROLLER BEARING and other rotating assemblies.

Technical Specifications

Compatibility

This inner clutch disk is specifically designed for ZF WG100, WG130, and WG131 powershift transmissions. It also fits select variants of the WG180 and WG200 series when used with the correct clutch pack configuration. For differential-side applications, the 2095209037 DIFFERENTIAL and 2095309059 DIFF.HOUSING are common companion parts in the same assembly. Always verify spline count and stack height against your transmission’s service manual before installation.

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