Namura NW-40003K1 Yamaha PWC Top-End Repair Kit

• Piston
• Rings
• Wrist pin
• Clips
• Top-end bearing
• Gasket kit

Restore dependable top-end performance with the Namura NW-40003K1 Yamaha PWC Top-End Repair Kit. Designed for compatible Yamaha personal watercraft applications, this repair kit provides a convenient solution for servicing worn or damaged top-end components. It is suited for maintenance, repair, and engine refresh projects where reliable replacement parts are needed to help return the engine to proper operating condition.
The Namura top-end repair kit helps simplify the parts-selection process by grouping service components under one part number. This makes it a practical choice for professional marine technicians, powersports repair shops, and experienced owners completing an engine rebuild. The kit is identified by part number NW-40003K1 and is manufactured under the Namura brand, a recognized name in replacement engine components for powersports applications.
Before ordering or beginning installation, verify compatibility with the specific Yamaha PWC model, engine configuration, and application requirements. Proper disassembly, inspection, cleaning, measurement, and assembly procedures are essential for a successful repair. Always compare the existing components with the replacement parts and follow the applicable Yamaha service information for torque specifications, clearances, lubrication, break-in procedures, and final testing. Professional installation is recommended when specialized tools or engine-rebuilding experience are required.
Whether used for scheduled maintenance or corrective repair, the Namura NW-40003K1 offers a focused replacement solution for compatible Yamaha personal watercraft top-end service. Selecting the correct application-specific kit can help reduce downtime, support consistent engine assembly, and provide confidence during the repair process. Confirm