Namura piston kits come with the piston individually wrapped; a set of OEM quality rings packed in their own box, a wrist pin, and circlips.
- MOS2 (Teflon/Molybdenum) Coated Skirts: A rolled-on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction, and helping to eliminate cold seizures.
- Machined Smooth Heads: Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%.
- Anodized Domes: Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons.
- Hypereutectic Casting Process: Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures.
Namura gaskets are manufactured to OE-specs, which means no trimming or fitment issues. Our materials are explicitly selected for their temperature, oil, fuel, and coolant-resistant qualities as well as tested using ASTM standards. Each design is evaluated against rigid quality-control standards to ensure each set meets or exceeds OE performance.
Restore dependable engine performance with the Namura NW-40003 PWC Yamaha Piston Kit. Designed for compatible Yamaha personal watercraft applications, this kit provides a practical replacement solution for worn, damaged, or serviceable piston components. Namura is recognized for producing replacement engine parts intended to support reliable fitment and consistent operation.
The NW-40003 piston kit is suitable for repair and rebuild work where maintaining proper cylinder performance is essential. Replacing worn piston components can help support compression, combustion efficiency, throttle response, and overall engine operation. Confirm application compatibility with the specific Yamaha PWC model, engine configuration, and service requirements before installation.
Designed for professional technicians, marine service centers, and experienced powersports enthusiasts, this Namura kit is a useful choice for routine engine maintenance or a more extensive top-end rebuild. Follow the manufacturer’s service procedures for inspection, preparation, installation, piston orientation, ring placement, and final engine testing. Proper installation and complementary inspection of the cylinder, rings, wrist pin, clips, and related components are recommended.
Brand: Namura
Part Number: NW-40003
Application: Compatible Yamaha PWC piston kit
Unit of Measure: Each
Features:
- Namura replacement piston kit for compatible Yamaha personal watercraft applications
- Supports engine repair, maintenance, and top-end rebuilding
- Designed to help restore compression and dependable engine performance
- Suitable for professional marine technicians and experienced powersports mechanics
- Verify model and engine compatibility before ordering or installation
