ZF 4143.103.421 OUTPUT | OEM Genuine Part

Overview

The ZF 4143.103.421 OUTPUT is a critical driveline component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part serves as the primary power take-off interface, transferring rotational force from the transmission housing to the downstream equipment. Positioned at the rear of the gearbox assembly, the output shaft works in concert with the 4143101025: HOUSING to maintain precise alignment under heavy loads. The SKU 4143.103.421 is machined from high-tensile steel to withstand continuous torque demands in industrial material handling applications.

Symptoms of Failure

• Oil seepage at the output seal: Worn splines or bearing surfaces cause fluid migration past the seal, leaving visible drips under the transmission.
• Vibration during PTO engagement: A failing output shaft creates harmonic oscillations that worsen as load increases, often misdiagnosed as a universal joint issue.
• Intermittent gear slipping: When the output shaft loses its press-fit tolerance, the driven gear can momentarily disengage under shock loads, producing a grinding noise.
• Metal debris in transmission fluid: Spalling on the output shaft surface introduces ferrous particles into the oil, detectable during routine filter inspections.

Technical Specifications

Compatibility

This output shaft is directly compatible with ZF HL 100 and HL 270 series transmissions used in forklifts, telehandlers, and wheel loaders. It also fits select WG180 and WG200 models when paired with the correct 4143301055: HOUSING adapter. For installations requiring a reinforced casing, the 4143298040: CASE provides the necessary structural support. Always verify the 0631329135: SPRING PIN is replaced during output shaft service to prevent retention failure.

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