ZF 4661.171.009 CLUTCH for WG 90/WG 94 | OEM Genuine Part

Overview

The ZF 4661.171.009 CLUTCH is a critical friction component engineered for the WG 90 and WG 94 series transmissions. Positioned within the planetary gear set, this OEM genuine part manages torque transfer between rotating shafts, enabling smooth gear engagement and disengagement under heavy load conditions. The SKU 4661.171.009 directly interfaces with the 4661101020: TRANSMISSION HOUSING to ensure precise alignment, while the 0631306174: CYLINDRICAL PIN secures its axial position during high-torque operations. This clutch assembly is essential for maintaining hydraulic pressure integrity within the transmission system.

Symptoms of Failure

• Delayed or harsh gear engagement: When the 4661.171.009 clutch wears, operators notice a pronounced lag when shifting between forward and reverse gears, often accompanied by a jarring engagement.
• Transmission slipping under load: A worn clutch disc fails to maintain friction, causing the transmission to momentarily lose power during acceleration, particularly on inclines.
• Contaminated transmission fluid: Friction material shedding from the clutch plate produces dark, metallic particles in the oil, visible during routine fluid checks.
• Overheating in the clutch pack area: Excessive slippage generates abnormal heat, which may trigger thermal warnings or cause the 4661301046: HOUSING II to show discoloration from thermal stress.

Technical Specifications

Compatibility

This clutch is primarily designed for ZF WG 90 and WG 94 series transmissions, commonly found in medium-duty trucks and construction equipment. It also fits select variants of the WG 180 and WG 200 series when used with the appropriate 4661301093: TUBE for hydraulic fluid routing. Always verify the clutch pack stack height against your transmission’s service manual, as the 4661.171.009 may require pairing with specific separator plates for optimal clearance.

Related Components