ZF 4108.303.045 INPUT FLANGE | OEM Genuine Part

Overview

The ZF 4108.303.045 INPUT FLANGE is a critical OEM genuine component designed to transfer rotational torque from the engine directly into the transmission assembly. Positioned at the front of the gearbox housing, this flange connects the driveshaft to the input shaft, ensuring precise power delivery in heavy-duty construction machinery. The SKU 4108.303.045 is engineered to ZF’s exacting tolerances, providing a secure spline interface that minimizes vibration and wear. This part is often replaced in conjunction with the 4108101031: HOUSING and the 4108303155: HOUSING, which support the flange’s alignment and structural integrity.

Symptoms of Failure

• Oil leaks around the input shaft seal: A worn input flange can damage the seal, leading to visible transmission fluid drips under the vehicle. This is a common search query for “ZF transmission oil leak at input flange.”
• Gear slipping or delayed engagement: When the flange’s splines wear, torque transfer becomes inconsistent, causing the transmission to slip under load. Operators often search for “ZF gear slipping when accelerating.”
• Vibration or driveline shudder: A loose or warped input flange creates imbalance, resulting in noticeable shaking during operation. This symptom is frequently queried as “construction machinery driveline vibration fix.”
• Metal debris in transmission fluid: Flange wear generates fine metallic particles, which can clog filters and damage internal components. This is a critical warning sign for “transmission metal shavings cause.”

Technical Specifications

Compatibility

This input flange is primarily compatible with ZF’s heavy-duty powershift transmission series used in construction machinery. Based on its design and spline count, it fits the following models: WG180, WG200, and WG210. It is also found in select Ecomat 4HP and 6HP variants used in wheel loaders and graders. Always verify the spline count and pilot diameter before installation. For sealing integrity, pair this flange with a new 0636302015: SCREW PLUG and a 0630361037: SEALING CAP to prevent contamination.

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