Product Introduction

The AZ9003395320 / K455320 Gearbox Needle Roller Bearing is a high-quality transmission component designed for SINOTRUK heavy-duty truck gearbox spare parts applications. It is mainly used as an idler gear bearing inside gearbox assemblies, supporting rotating gears and shafts while maintaining smooth power transmission and accurate gear positioning during operation.

Manufactured according to OEM standard quality requirements, this needle roller bearing adopts precision-engineered needle rollers and a high-strength bearing cage structure. Its compact design provides excellent radial load capacity while reducing friction and improving gearbox efficiency. The needle roller configuration makes it suitable for limited installation spaces inside heavy-duty transmission assemblies.

The AZ9003395320 / K455320 bearing is widely used in SINOTRUK gearbox systems, including HOWO truck transmission assemblies and related idler gear mechanisms. It supports stable gear rotation, reduces internal gearbox wear, and helps improve transmission reliability under heavy-load transportation, construction, and long-distance driving conditions.

As an aftermarket replacement part, this gearbox needle roller bearing is suitable for truck repair workshops, gearbox maintenance specialists, fleet operators, and wholesale spare parts distributors. With OEM-standard quality, direct replacement compatibility, and durable performance, it provides a reliable solution for SINOTRUK gearbox repair and maintenance requirements.

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