ZF 4143.152.402 COUPLING for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.152.402 COUPLING is a critical torque-transfer component engineered specifically for the HL 100 and HL 270 series transmissions. This OEM genuine part acts as the mechanical link between the engine output and the transmission input shaft, ensuring smooth power delivery and dampening torsional vibrations. The SKU 4143.152.402 is precision-machined to ZF’s exacting tolerances, making it essential for maintaining driveline integrity in heavy-duty industrial applications. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this coupling forms a sealed, high-strength assembly that withstands extreme loads and thermal cycling.

Symptoms of Failure

• Transmission shudder during acceleration: A worn 4143.152.402 coupling causes noticeable vibration or jerking when shifting from neutral to drive, often misdiagnosed as a torque converter issue.
• Metallic grinding noise from bell housing: As the coupling splines wear, you may hear a distinct scraping or clicking sound, especially at low RPM, indicating imminent failure.
• Oil seepage around the coupling hub: Deterioration of the mating surface leads to fluid leaks, often accompanied by a burnt smell from overheated transmission fluid.
• Intermittent loss of power transfer: The coupling may slip under heavy load, causing the engine to rev without proportional vehicle movement—a classic sign of coupling fatigue.

Technical Specifications

Compatibility

This coupling is designed for the ZF HL 100 and HL 270 series transmissions, commonly found in off-highway trucks, wheel loaders, and industrial machinery. Based on its spline profile and housing interface, the 4143.152.402 also fits select WG180 and WG200 models where the coupling-to-housing clearance matches. For proper sealing, always replace the 0634313603 O-RING and 4475280018 SCREW PLUG during installation to prevent contamination and fluid loss.

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