ZF 4646.252.037 DISC CARRIER for WG251 | OEM Genuine Part

Overview

The ZF 4646.252.037 DISC CARRIER is a critical internal component engineered specifically for the WG 251 Series heavy-duty transmission. This genuine OEM part functions as the central hub that supports and positions the clutch disc packs, ensuring precise alignment during gear engagement. Located within the main shaft assembly, the disc carrier transmits rotational torque from the clutch discs to the output shaft while maintaining axial stability under high-load conditions. The SKU 4646.252.037 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in commercial vehicle drivetrains.

Symptoms of Failure

When the ZF 4646.252.037 disc carrier begins to wear, operators may notice specific performance issues. Delayed or harsh gear engagement occurs when the carrier’s splines or support surfaces degrade, preventing smooth clutch pack actuation. Intermittent transmission slipping under load is another common symptom, as a worn carrier fails to maintain proper disc stack compression. Metallic grinding noises from the transmission housing often indicate that the carrier’s bearing surfaces have developed excessive play. Additionally, contaminated transmission fluid with metallic particles can signal that the disc carrier is shedding material internally, requiring immediate inspection.

Technical Specifications

Compatibility

This genuine ZF disc carrier is primarily designed for the WG 251 transmission model. Based on its dimensional and spline configuration, it is also compatible with the WG 180, WG 200, and WG 240 series transmissions used in medium-duty trucks and construction equipment. The part integrates directly with the 4646101072 TRANSMISSION HOUSING and the 4646301201 HOUSING to form the main gear train enclosure. Proper installation requires the 4646301166 COVER to seal the assembly, while 0636101051 CAP SCREW fasteners secure the carrier to the shaft hub.

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