ZF 4660.233.007 HELICAL GEAR for WG200/WG92 | OEM Genuine Part

Overview

The ZF 4660.233.007 HELICAL GEAR is a precision-machined component engineered for the auxiliary drive and PTO (Power Take-Off) train within the WG 200 and WG 92 series transmissions. This gear transmits rotational force from the main shaft to the oil pump and peripheral systems, ensuring consistent lubrication and hydraulic pressure. As an OEM genuine part (SKU: 4660.233.007), it meets ZF’s exacting tolerances for tooth profile and surface hardness, reducing noise and vibration during operation. This helical gear interfaces directly with the 4660198001: PERIPHERALS assembly and is housed within the 4660301018: HOUSING.

Symptoms of Failure

• Whining or howling noise from transmission during acceleration: Worn helical gear teeth create uneven contact patterns, producing a distinct high-pitched sound that intensifies under load.
• Intermittent loss of hydraulic pressure or erratic shifting: A chipped or pitted gear reduces oil pump drive speed, causing delayed engagement or slipping in higher gears.
• Metallic debris in transmission fluid filter: Flaking or spalling on the gear surface introduces ferrous particles into the lubrication circuit, often visible during routine oil changes.
• Vibration at the transmission housing: Excessive backlash from a worn gear transmits oscillation through the 4660101011: TRANSMISSION HOUSING, felt as a low-frequency shudder at idle.

Technical Specifications

Compatibility

This helical gear is a direct replacement for ZF WG 200 series transmissions (including WG180, WG200, and WG210 variants) and WG 92 series units. It is specifically designed for models equipped with the 0501209818: RANGE SELECTOR assembly and integrated oil pump drives. The gear also fits select off-highway and marine derivatives of the WG family where the auxiliary drive train uses a 29-tooth helical pinion. Always verify the tooth count and bore diameter against your existing gear before installation.

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