ZF 4661.103.003 OUTPUT for WG90 | OEM Genuine Part

Overview

The ZF 4661.103.003 OUTPUT for WG90 is a critical driveline component engineered to transfer rotational force from the transmission’s planetary gear set to the output shaft. Positioned at the rear of the WG 90 Series housing, this OEM genuine part ensures precise torque delivery under heavy loads. The SKU 4661.103.003 is manufactured to ZF’s original tolerances, guaranteeing a direct fit and long service life in off-highway and industrial applications. When paired with the 4661101020: TRANSMISSION HOUSING, this output assembly forms the backbone of the drivetrain’s power exit point.

Symptoms of Failure

• Oil leaks at the rear seal area — Worn output flanges often cause fluid seepage around the transmission tail, leading to low lubricant levels and potential overheating.
• Gear slipping under load — A damaged 4661.103.003 output can result in intermittent power loss or erratic engagement, especially during uphill or high-torque maneuvers.
• Vibration or driveline shudder — Excessive play in the output hub creates noticeable shaking at highway speeds or during deceleration, accelerating wear on the 4661301046: HOUSING II.
• Metallic grinding noises — Internal spline wear produces a distinct grinding sound when shifting between forward and reverse gears.

Technical Specifications

Compatibility

This output is specifically designed for the ZF WG 90 Series transmission family, including models such as WG90, WG120, WG150, and WG180. It also fits select WG200 variants with matching output flange configurations. The 4661.103.003 interfaces directly with the 4661301093: TUBE for lubrication routing and is secured using the 0631306174: CYLINDRICAL PIN for precise alignment. Always verify your transmission’s serial number before ordering.

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