ZF 4461.301.007 DIFFERENTIAL SPIDER | OEM Genuine Part

Overview

The ZF 4461.301.007 DIFFERENTIAL SPIDER is a critical internal component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part functions as the central cross-shaft that distributes torque from the ring gear to the side gears, enabling differential action between the left and right axle shafts. Without a properly functioning spider, the transmission cannot compensate for speed differences during turns, leading to drivetrain binding. The SKU 4461.301.007 is precision-machined to OEM tolerances and sits directly inside the differential case, interfacing with the 4143101009: HOUSING and the 4143301025: HOUSING to maintain gear alignment under extreme loads.

Symptoms of Failure

When the ZF 4461.301.007 differential spider wears out, operators will notice distinct performance issues. Grinding or chattering noise during low-speed turns is the most common early indicator, as worn spider journals cause uneven gear mesh. Uneven tire wear or axle hop on solid surfaces signals that the spider is no longer allowing proper differential action. Metal debris in the transmission oil filter often accompanies spider failure, as the hardened steel surface flakes under stress. Finally, intermittent loss of traction on one wheel during acceleration points to a spider that has developed excessive clearance, allowing the side gears to skip.

Technical Specifications

Compatibility

This differential spider is designed for ZF heavy-duty powershift transmissions commonly found in wheel loaders, graders, and dump trucks. It is a direct fit for the ZF WG180, WG200, and WG211 series transmissions. The part also applies to select ZF Ergopower and ZF Ecomix drivelines used in concrete mixers. Always verify the differential case casting number before installation. The spider works in conjunction with the 0634313603: O-RING for sealing and the 4475280018: SCREW PLUG for retaining lubrication within the differential housing.

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