ZF 5838.300.138 INNER CLUTCH DISK for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 5838.300.138 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 precise shift control. The SKU 5838.300.138 is designed to withstand high thermal loads and mechanical stress, directly influencing the transmission’s operational lifespan. When paired with the 5838109007 DIFFERENTIAL, it optimizes torque distribution across the driveline, reducing wear on adjacent components.

Symptoms of Failure

• Delayed or harsh gear engagement: Worn inner clutch disks cause hesitation or abrupt shifts, especially under load, as friction material degrades.
• Transmission fluid contamination: Excessive clutch wear releases metallic particles into the oil, visible as dark, gritty fluid during inspection.
• Torque loss during acceleration: Slipping occurs when the disk fails to grip, leading to RPM flare without corresponding vehicle speed increase.
• Burning odor from the transmission: Overheated friction surfaces emit a distinct smell, often accompanied by reduced hydraulic pressure in the clutch circuit.

Technical Specifications

Compatibility

This inner clutch disk is specifically designed for ZF WG100, WG130, and WG131 transmissions, commonly used in medium-duty trucks and construction equipment. It also fits select variants of the WG180 and WG200 series when used in clutch pack configurations requiring a 180 mm friction surface. For differential-related repairs, the 2095209019 DIFFERENTIAL and 0750117075 TAPER ROLLER BEARING are frequently replaced simultaneously. Always verify spline count and stack height against your transmission’s service manual.

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