NAMURA NA-40011R OEM-Style Ring Set

Each ring set is for one piston

The NAMURA NA-40011R OEM-style ring set is designed for replacement and service applications where dependable piston ring performance is required. Manufactured under the NAMURA brand, this set provides a practical option for restoring the ring assembly during an engine rebuild or maintenance project. Its OEM-style design is intended to support a proper replacement process while maintaining compatibility with the application specified by the manufacturer.
Use the NAMURA NA-40011R ring set as part of a complete engine service. Before installation, verify the part number against the original component, engine specifications, and applicable service information. Confirm ring orientation, groove placement, end-gap requirements, and installation procedures according to the engine manufacturer’s instructions. Proper preparation and installation are important for supporting sealing performance and reliable operation.
This product is supplied as a set, making it convenient for replacing the required ring components during service. The set format helps simplify parts selection and keeps the replacement components together for installation. Inspect the piston grooves, cylinder condition, and related components before fitting new rings, and replace or service worn parts as needed. Clean, carefully prepared mating surfaces and adherence to the recommended break-in procedure can help support consistent results.
Choose the NAMURA NA-40011R when you need an OEM-style ring set identified by a specific, easy-to-reference part number. It is suited to professional technicians, repair facilities, and experienced engine builders who require a clearly identified replacement component for their application. Always confirm exact