ZF 4143.351.081 OUTER CLUTCH DISK for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.351.081 OUTER CLUTCH DISK is a critical friction component engineered for the HL 100 and HL 270 series transmissions. Positioned within the clutch pack assembly, this OEM genuine part transfers torque from the driving hub to the output shaft under hydraulic pressure. The SKU 4143.351.081 is manufactured to ZF’s exacting tolerances, ensuring consistent engagement and disengagement during load cycles. When paired with the 4143101025 HOUSING and the 4143301055 HOUSING, this outer disk maintains proper clearance within the clutch drum, preventing metal-on-metal contact that can lead to catastrophic failure.

Symptoms of Failure

• Delayed or harsh gear engagement: A worn outer clutch disk reduces hydraulic clamping force, causing noticeable hesitation or abrupt shifts when accelerating.
• Transmission slipping under load: As friction material degrades, the disk loses its grip, resulting in RPM flare without corresponding vehicle speed increase—especially on inclines.
• Metallic grinding or chattering noises: When the disk’s friction lining is completely worn, steel-on-steel contact produces a distinct grinding sound during clutch pack actuation.
• Contaminated transmission fluid with dark debris: Shed friction material from the outer disk circulates through the system, often clogging the 0501337904 SPEED SENSOR and reducing hydraulic efficiency.

Technical Specifications

Compatibility

This outer clutch disk is specifically validated for ZF HL 100 and HL 270 series transmissions, including models such as the WG180, WG200, and WG210. It also integrates with the 4143298040 CASE assembly found in off-highway and industrial drivelines. For proper installation, ensure the 0631329135 SPRING PIN is correctly aligned to prevent disk rotation within the clutch hub. Always verify spline count and stack height against your specific transmission variant before ordering.

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