ZF 4661.134.014 CONVERTER Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4661.134.014 CONVERTER Powershift Transmission Assembly is a complete, pre-assembled unit designed for the WG 94 Series. This integral component houses the torque converter and hydraulic control system, serving as the core power transfer module within the transmission. The SKU 4661.134.014 represents a fully sealed assembly that converts engine torque into hydraulic energy, enabling smooth gear engagement under heavy loads. It sits directly between the engine flywheel housing and the main gearbox, managing fluid flow and pressure to modulate clutch packs. When replacing this unit, technicians often pair it with a new 0501340519: CONVERTER to ensure optimal torque multiplication and a fresh 4661130004: ENGINE CONNECTION for secure mounting alignment.

Symptoms of Failure

• Delayed or harsh shifting under load — Worn internal seals cause pressure loss, leading to sluggish gear changes or sudden engagement when operating heavy equipment.
• Transmission overheating and fluid darkening — A failing converter assembly generates excessive heat, often accompanied by burnt-smelling ATF and visible debris in the oil pan.
• Torque converter shudder or vibration — Damaged stator bearings or worn clutch plates produce a rhythmic shaking during acceleration, especially at low speeds.
• External oil seepage from bell housing area — Cracked housing or degraded gaskets allow fluid to escape, leaving puddles under the vehicle and reducing hydraulic pressure.

Technical Specifications

Compatibility

This assembly is engineered for the ZF WG 94 Series powershift transmissions, specifically models used in construction and agricultural machinery. Compatible transmission variants include the WG180, WG200, and WG210 series, which share the same bell housing bolt pattern and hydraulic circuit design. It also fits select WG 120 and WG 150 units where the converter cavity dimensions match. Always verify the spline count and pilot bore depth against your existing unit. For complete rebuilds, consider replacing the 4642230036: DIAPHRAGM and 0730301765: WASHER to prevent future leaks.

Related Components