Sealed Power R9905-30 Piston Ring Set Bore - 4.280 5/64 5/64 3/16

The Sealed Power R9905-30 is a premium piston ring set engineered for reliable engine performance and longevity. This ring set is designed for engines with a 4.280-inch bore diameter and features a traditional three-piece configuration optimized for proper compression sealing and oil control.

Key Specifications:

• Bore Size: 4.280 inches (108.712mm)
• Top Ring Width: 5/64 inch (1.984mm)
• Second Ring Width: 5/64 inch (1.984mm)
• Oil Ring Width: 3/16 inch (4.763mm)
• Standard wall thickness for reliable cylinder sealing
• Moly-faced or chrome-faced compression rings for wear resistance

Features and Benefits:

• Precision-manufactured to OEM specifications for proper fit and function
• Three-piece design includes two compression rings and one oil control ring
• Advanced ring materials reduce friction and resist wear
• Optimized ring tension provides excellent sealing without excessive cylinder wall pressure
• Suitable for standard rebuild and performance applications

Sealed Power is a trusted brand in the engine rebuilding industry, known for producing quality replacement engine components. This ring set meets or exceeds original equipment standards for dependable engine operation. Each set includes rings for one piston; order the appropriate quantity for your engine configuration.