NPR SWT20063-3 Piston Ring Set for Mazda B6 Engine 0.75mm Oversize

The NPR SWT20063-3 Piston Ring Set is a premium quality engine component designed for Mazda B6 series engines, including the B6-E, B6-ZE, and B6-ME found in 1990-1993 Mazda Miata, Mazda 323, and Familia models. This oversize piston ring set (0.75mm/0.030") is specifically engineered for engines that have been bored to accommodate larger pistons during rebuilds.

Key Features:

• Manufactured by NPR (Nippon Piston Ring Co., Ltd.), Japan's first piston ring manufacturer founded in 1931
• Standard bore diameter: 78.00mm with 0.75mm oversize specification
• Ring configuration: 1.5mm (top compression), 1.5mm (second compression), 3.0mm (oil control ring)
• Complete set includes rings for all 4 cylinders
• Premium steel construction with advanced wear and heat resistance properties
• Precision-engineered to meet or exceed OEM specifications
• Minimizes friction, reduces blow-by, and controls oil consumption

NPR has been supplying original equipment manufacturers and the automotive aftermarket with high-quality internal combustion engine components since 1973. These piston rings are designed to restore proper compression, improve engine efficiency, and extend engine life. The oversize specification makes this set ideal for performance rebuilds or engines requiring machining due to cylinder wear.

Replaces Mazda OEM Numbers: B6Y3-11-SC0A, B6Y3-11-SC0, B6Y3-11-SD0, B6Y3-11-SDX