Restore proper engine sealing with Namura NA-10040R piston rings, designed specifically for use with compatible Namura pistons. This ring set is sized for an 84.97 mm piston and is intended for applications that require reliable compression control, reduced blow-by, and effective oil management.
Manufactured for Namura piston assemblies, the NA-10040R replacement rings support dependable engine performance when installed with the correct piston, cylinder, and ring-groove specifications. These rings are suitable for service, rebuild, and replacement applications where the original rings are worn, damaged, or no longer maintaining proper sealing.
Before installation, verify that the piston model, cylinder condition, bore size, ring-groove configuration, and end-gap requirements match your engine application. Proper honing, cleaning, ring orientation, and installation procedures are essential for correct break-in and long-term performance. The manufacturer part number is NA-10040R, and the vendor part number is 186-1040R.
Features:
- Size: 84.97 mm piston ring set
- Model: NA-10040R
- Brand: Namura
- Manufacturer part number: NA-10040R
- Vendor part number: 186-1040R
- Fitment: Designed for compatible Namura pistons only
- Application: Replacement piston rings for engine service and rebuilds
- Performance: Supports compression sealing, blow-by control, and oil management