ZF 4651.252.004 SPUR GEAR for WG100 | OEM Genuine Part

Overview

The ZF 4651.252.004 SPUR GEAR is a critical power transmission component engineered for the WG 100 Series transmission family. This OEM genuine part, identified by SKU 4651.252.004, sits directly within the gear train assembly, where it engages with adjacent shafts to transfer torque and maintain precise rotational synchronization. As a spur gear, it features straight-cut teeth that provide high efficiency and durability under heavy loads, making it essential for smooth shifting and reliable operation in industrial drivetrains. This gear is often installed inside the 4651101007: TRANSMISSION HOUSING, which encloses the entire gear set and protects it from contaminants.

Symptoms of Failure

When the 4651.252.004 spur gear begins to wear, operators may notice several distinct failure indicators. First, gear whining or grinding noise during acceleration is a common sign of tooth surface pitting or misalignment. Second, intermittent gear slipping under load often occurs when the gear teeth have worn beyond tolerance, causing loss of torque transfer. Third, metal debris in the transmission fluid indicates advanced wear, as fragments from the gear teeth contaminate the lubricant. Fourth, difficulty engaging specific gears may arise if the spur gear’s profile has degraded, leading to rough shifting. These symptoms are frequently accompanied by failures in the 0634303928: O-RING, which seals the housing and prevents fluid leaks.

Technical Specifications

Compatibility

This spur gear is primarily designed for the ZF WG 100 Series transmissions, including models such as WG100, WG120, and WG150. It may also be compatible with the WG180 and WG200 series, depending on the specific gear ratio and shaft configuration. For proper installation, the gear must be paired with the 4651301029: HOUSING and the 4651301024: HOUSING to ensure correct alignment and bearing support. Always verify the tooth profile and bore size against your transmission’s service manual before ordering.

Related Components