ZF 4108.102.055 INPUT | OEM Genuine Part

Overview

The ZF 4108.102.055 INPUT is a critical OEM genuine component designed to transfer rotational power from the engine directly into the transmission gear train. Positioned at the front of the assembly, this input shaft engages with the torque converter and planetary gear sets to initiate drive in heavy-duty construction machinery. As a precision-machined part, the SKU 4108.102.055 ensures minimal backlash and reliable torque transmission under extreme loads. For complete assembly integrity, this input works in tandem with the 4108101115: HOUSING and the 4108201277: HOUSING, which provide structural support and alignment within the transmission casing.

Symptoms of Failure

• Delayed engagement or gear slipping: A worn input shaft spline or bearing surface causes hesitation when shifting from neutral to drive, often accompanied by a grinding noise.
• Transmission fluid leaks at the front seal: Deterioration of the input shaft surface leads to premature failure of the 0750110040: SHAFT SEAL, resulting in visible oil drips near the bell housing.
• Vibration during acceleration: Excessive wear on the input shaft journals creates imbalance, transmitting harsh vibrations through the driveline under load.
• Metal debris in the oil pan: Flaking or pitting on the input shaft gear teeth generates metallic particles, detectable during routine fluid changes.

Technical Specifications

Compatibility

This genuine ZF input shaft is engineered for use in the following transmission models commonly found in construction machinery: WG180, WG200, and WG210 series. It also fits select variants of the Ecomat 4HP and 6HP transmissions used in wheel loaders and excavators. For proper sealing and fluid retention, always pair this input with a new 0501313402: DRAIN VALVE and the 4108301304: BEARING COVER to protect the front bearing from contamination.

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