ZF 4646.302.077 CONVERTER BELL for WG250 | OEM Genuine Part

Overview

The ZF 4646.302.077 CONVERTER BELL is a critical structural component engineered for the WG250 series of automatic transmissions. This OEM genuine part serves as the rigid housing that connects the torque converter assembly to the main transmission casing, ensuring precise alignment of the rotating elements. The SKU 4646.302.077 is machined to exact ZF tolerances to absorb torsional loads and maintain a sealed environment for the converter. It sits directly between the engine flywheel housing and the TRANSMISSION HOUSING, forming the forward-most structural boundary of the drivetrain assembly.

Symptoms of Failure

When the 4646.302.077 converter bell begins to degrade, operators often notice specific failure modes. Look for these long-tail search indicators:

• Torque converter oil leaks at bell housing seam: Cracks or warpage in the bell allow transmission fluid to escape, leaving puddles under the vehicle.
• Gear slipping or delayed engagement: Misalignment of the converter bell causes the pump drive to wobble, reducing hydraulic pressure and causing erratic shifting.
• Vibration during acceleration: A distorted bell housing fails to center the torque converter, transmitting harsh vibrations through the chassis.
• Metallic grinding noise from bell area: Worn mounting surfaces allow the converter to contact the bell interior, producing audible wear sounds.

Technical Specifications

Compatibility

This converter bell is specifically designed for the ZF WG250 series, but it also fits select variants in the WG family. Compatible transmission models include:

• ZF WG180 (with adapter ring)
• ZF WG200 (direct fit)
• ZF WG250 (primary application)
• ZF WG300 (with modified bolt set)

When replacing this bell, always inspect the mating HOUSING and the COVER for wear. The CONNECTING PART must also be checked for thread integrity during reassembly.

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