ZF 4646.252.048 SPUR GEAR for WG250 | OEM Genuine Part

Overview

The ZF 4646.252.048 SPUR GEAR is a critical power transmission component engineered specifically for the WG 250 series. This OEM genuine part is responsible for transferring rotational force between parallel shafts within the transmission’s gear train, ensuring precise speed and torque management under heavy-duty industrial loads. The SKU 4646.252.048 is machined to exact ZF tolerances, guaranteeing seamless meshing with adjacent gears and reducing operational noise. This spur gear sits within the intermediate shaft assembly, directly interacting with the TRANSMISSION HOUSING and the HOUSING to maintain proper alignment and load distribution.

Symptoms of Failure

• Erratic gear engagement and grinding noises: Worn teeth on the 4646.252.048 spur gear cause irregular meshing, producing a distinct metallic grinding sound during acceleration or deceleration.
• Progressive oil contamination with metallic debris: As the gear surface degrades, fine metal particles enter the lubricant, visible as glittering flakes during oil changes.
• Sudden transmission slippage under load: A chipped or cracked spur gear loses its ability to transmit torque consistently, leading to momentary power loss when climbing grades or hauling heavy loads.
• Increased operating temperature: Excessive friction from a damaged gear face generates abnormal heat, often detectable through the COVER surface.

Technical Specifications

Compatibility

This spur gear is a direct replacement for the WG 250 series transmission. Based on its design and tooth geometry, it is also compatible with the following ZF models that share the same intermediate shaft architecture: WG 180, WG 200, WG 211, and WG 242. Always verify the tooth count and bore diameter against your existing gear before installation. The 4646.252.048 mounts securely using HEXAGON SCREW fasteners, which must be torqued to factory specifications.

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