Restore proper compression and support reliable engine performance with Namura NA-40008R piston rings. Designed for use with Namura pistons measuring 84.42 mm, this ring set is intended for compatible Yamaha applications and provides a precise fit when matched to the correct piston and engine configuration.
Manufactured by Namura, these replacement piston rings help seal combustion gases, manage oil consumption, and maintain efficient transfer of heat from the piston to the cylinder wall. The NA-40008R is specifically intended for Namura pistons only, so verify piston compatibility and application details before installation. Proper ring orientation, ring-gap inspection, and cylinder preparation are essential for dependable service.
Use this Namura piston ring set when rebuilding or servicing a compatible Yamaha engine equipped with a Namura 84.42 mm piston. Fitment may vary by year, model, engine, and piston design; confirm the manufacturer’s application information and compare the existing piston ring profile before ordering. This product is identified by manufacturer part number NA-40008R and vendor part number 186-4008R.
Features:
- Size: 84.42 mm piston ring set
- Application: Designed for compatible Yamaha engine applications
- Compatibility: For Namura pistons only
- Brand: Namura
- Manufacturer Part Number: NA-40008R
- Vendor Part Number: 186-4008R
- Function: Helps restore compression, manage oil consumption, and support efficient engine operation