ZF 4616.308.111 GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.308.111 GEAR is a precision-machined component engineered for the WG 65 Series transmission family. This helical gear plays a critical role in the power transfer path, meshing directly with the countershaft to modulate torque and rotational speed within the planetary gear set. As an OEM genuine part, SKU 4616.308.111 ensures exacting tolerances for minimal backlash and noise, directly influencing shift quality and overall drivetrain efficiency. When installed alongside a properly torqued HEXAGON SCREW and a sealed OUTPUT assembly, this gear maintains the structural integrity required for heavy-duty industrial applications.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth create uneven contact patterns, producing a distinct metallic whine that intensifies under load. This is a primary indicator that the 4616.308.111 gear requires immediate replacement.
• Intermittent gear slipping under torque: As the gear surface degrades, the transmission may momentarily lose engagement, causing a sudden RPM flare without corresponding vehicle speed increase. This symptom often accompanies a failing OUTPUT FLANGE.
• Metallic debris in transmission fluid: Flaking or pitting on the gear teeth sheds microscopic steel particles into the oil. If you observe glitter-like contamination during a drain, inspect the 4616.308.111 gear and the TRANSMISSION HOUSING for secondary damage.
• Hard shifting or delayed engagement: Excessive gear wear alters the hydraulic timing within the valve body, leading to harsh upshifts or a noticeable lag when selecting drive or reverse.

Technical Specifications

Compatibility

This gear is specifically designed for the ZF WG 65 Series, including the WG65, WG80, and WG100 models. It is also compatible with select WG120 and WG150 transmissions that share the same gear train architecture. Always verify the tooth count and module against your existing gear before ordering. For complete assembly, pair this gear with a new HEXAGON SCREW and inspect the TRANSMISSION HOUSING for wear at the bearing journals.

Related Components