ZF 4616.301.242 BUSH for WG65 | OEM Genuine Part

Overview

The ZF 4616.301.242 BUSH is a precision-engineered wear component designed for the WG 65 Series transmission. This OEM genuine part functions as a sacrificial bearing surface, reducing friction between rotating shafts and the transmission housing. Located within the gear train assembly, the bushing ensures precise shaft alignment and dampens vibration during high-torque operations. The SKU 4616.301.242 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification. When installed alongside a TRANSMISSION HOUSING, this bushing maintains critical clearances that prevent metal-on-metal contact.

Symptoms of Failure

• Low-frequency grinding noise during gear engagement: A worn bushing allows shaft wobble, producing a rhythmic grinding sound that intensifies under load. This is a common symptom in high-mileage WG65 units.
• Transmission fluid contamination with metallic particles: As the bushing surface erodes, microscopic bronze or steel particles enter the oil circuit, often visible as glitter in the fluid during drain intervals.
• Gradual gear slipping under acceleration: Excessive bushing clearance disrupts hydraulic pressure to the clutch packs, causing delayed engagement or slipping in 3rd and 4th gears.
• Visible oil seepage around the shaft seal area: A worn bushing misaligns the shaft, distorting the seal lip and allowing ATF to weep past the HEXAGON SCREW mounting points.

Technical Specifications

Compatibility

This bushing is specifically engineered for the ZF WG 65 Series, including the WG65, WG120, WG180, and WG200 models. It is a direct replacement for transmissions used in municipal buses, refuse trucks, and medium-duty construction vehicles. The part interfaces with the HEXAGON SCREW and HEXAGON SCREW fasteners that secure the bearing carrier. Always verify your transmission serial number against the WG65 parts catalog before ordering.

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