ZF 4651.006.011 6 WG 100 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4651.006.011 6 WG 100 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single, ready-to-install package. As a core element of the WG 100 Series, the SKU 4651.006.011 replaces the entire rotating assembly, ensuring precise gear engagement and torque distribution across six forward speeds. It sits directly within the main transmission casing, interfacing with the TRANSMISSION HOUSING and the HOUSING to form the sealed driveline core.

Symptoms of Failure

• Erratic gear engagement or clutch slip under load: Worn internal clutches or seals within the 4651.006.011 cause delayed shifts and power loss during acceleration, often accompanied by a burning smell.
• Hydraulic pressure loss and delayed forward/reverse response: Internal seal degradation leads to low system pressure, resulting in a 2-3 second lag when shifting from neutral to drive.
• Metallic grinding noise from the transmission bell housing: Bearing or gear tooth wear inside the assembly produces a distinct whine or grind, particularly in 3rd and 4th gears.
• External oil seepage at the main joint: A failing O-RING between the assembly and the HOUSING allows ATF to weep, leaving visible drips under the vehicle after shutdown.

Technical Specifications

Compatibility

This complete assembly is engineered for the ZF WG 100 Series powershift transmissions. It is a direct fit for the WG 100, WG 120, and WG 150 models commonly found in telescopic handlers, wheel loaders, and agricultural tractors. The 4651.006.011 also serves as a replacement core for early WG 180 variants that share the same six-speed planetary layout. Always verify the transmission serial number against the housing casting to confirm compatibility with your specific TRANSMISSION HOUSING.

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