ZF 0750.117.888 ROLLER BEARING for WG258/WG261/WG308 | OEM Genuine Part

Overview

The ZF 0750.117.888 ROLLER BEARING is a critical internal component designed for precise load distribution within the planetary gear sets of ZF WG-series transmissions. This OEM genuine part reduces rotational friction between the sun gear and the planetary carrier, ensuring smooth torque transfer under heavy-duty conditions. The SKU 0750.117.888 is engineered to withstand high radial loads and axial forces common in WG258, WG261, and WG308 models. It sits directly inside the main shaft assembly, adjacent to the 4646101156: TRANSMISSION HOUSING and the 4646301327: HOUSING, where it supports the rotating elements during gear shifts and sustained operation.

Symptoms of Failure

• Whining or grinding noise during gear engagement – A worn 0750.117.888 bearing produces a distinct metallic whine that intensifies under load, often misdiagnosed as gear wear.
• Intermittent gear slipping under acceleration – As the roller bearing loses its cage integrity, the planetary gears lose alignment, causing momentary power loss in 3rd and 4th gears.
• Metallic debris in transmission fluid – Flaking of the bearing raceways introduces fine steel particles into the oil, visible during routine drain intervals.
• Vibration through the shift lever or chassis – Uneven roller wear creates radial runout that transmits vibration through the 0636015304: HEXAGON SCREW and 0636101828: CAP SCREW fasteners securing the housing.

Technical Specifications

Compatibility

This roller bearing is directly compatible with ZF WG-series transmissions that utilize a 45mm inner diameter planetary shaft. Verified models include WG180, WG200, WG258, WG260, WG261, WG308, and WG311 series. It also fits select WG150 and WG250 variants when used in conjunction with the 4646301102: COVER SHEET and 4646301285: COVER SHEET for proper axial retention. Always verify your transmission’s serial number against the ZF parts catalog before installation.

Related Components