ZF 4661.373.003 INNER DISK CARRIER for WG94 | OEM Genuine Part

Overview

The ZF 4661.373.003 INNER DISK CARRIER is a precision-machined OEM genuine component engineered specifically for the WG 94 series of heavy-duty transmissions. This critical internal part functions as the structural hub that houses and aligns the clutch disk packs, ensuring proper torque transfer and smooth gear engagement under high-load conditions. Positioned directly within the main transmission housing, the carrier interfaces with the input shaft and planetary gear sets. The SKU 4661.373.003 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in demanding industrial applications such as construction, mining, and material handling equipment.

Symptoms of Failure

When the ZF 4661.373.003 inner disk carrier begins to wear or sustain damage, operators may notice several distinct performance issues. Delayed or harsh gear engagement is a common early indicator, as the carrier’s splines or mounting surfaces lose their precise fit. Intermittent transmission slipping under load often follows, caused by the disk packs no longer being held in correct alignment. Metallic debris in the transmission fluid is another telltale sign, resulting from fretting wear between the carrier and the TRANSMISSION HOUSING. Finally, unusual vibration or noise during shifting can occur when the carrier’s structural integrity is compromised, leading to uneven clutch pack pressure.

Technical Specifications

Compatibility

This inner disk carrier is primarily designed for the ZF WG 94 series, but its robust construction makes it suitable for several related transmission models. Verified compatibility includes the WG94, WG180, and WG200 series transmissions commonly found in forklifts, wheel loaders, and telehandlers. The carrier also fits select variants of the WG150 and WG250 models when used with the correct HOUSING assembly. For proper installation, ensure the CYLINDRICAL PIN is aligned correctly, and the TUBE lubrication passages are clear to prevent premature wear.

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