ZF 4143.351.011 OUTER CLUTCH DISK for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.351.011 OUTER CLUTCH DISK is a critical friction component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part, identified by SKU 4143.351.011, sits within the clutch pack assembly, where it transfers torque between rotating elements during gear engagement. It interfaces directly with the 4143101009 HOUSING and the 4143301025 HOUSING, ensuring precise alignment and consistent hydraulic pressure distribution. Without this disk, the transmission cannot achieve proper lock-up or smooth power flow under load.

Symptoms of Failure

• Delayed or harsh gear engagement: When the outer clutch disk wears, you may notice a pronounced lag when shifting from neutral to drive or reverse, followed by a jarring engagement.
• Torque converter shudder at low speeds: A vibrating sensation during acceleration from a stop often indicates the friction material on the 4143.351.011 has glazed or thinned.
• Burning smell from transmission fluid: Overheated clutch disks produce a distinct acrid odor, frequently accompanied by dark, gritty fluid.
• Intermittent gear slipping under heavy load: The transmission may momentarily lose power delivery when climbing grades or towing, as the worn disk fails to clamp effectively.

Technical Specifications

Compatibility

This outer clutch disk is designed for ZF HL 100 and HL 270 series transmissions, which are commonly found in industrial forklifts, telehandlers, and wheel loaders. It is also compatible with the WG180 and WG200 series, where the clutch pack dimensions match. Always verify the spline count and stack height against your transmission’s service manual. For a complete overhaul, pair this disk with the 0634313603 O-RING to seal the piston bore, and the 4475280018 SCREW PLUG to secure the clutch housing.

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