Yamaha Motor Co., Ltd. 4SB-E1605-00-00 Piston Ring

The Yamaha 4SB-E1605-00-00 Piston Ring functions as a critical sealing component within motorcycle engine combustion systems, specifically designed to maintain optimal cylinder compression while regulating oil distribution between the piston and cylinder wall to prevent blow-by and ensure efficient internal engine performance during daily operation. Constructed from heat-resistant hardened steel or alloy material suitable for demanding small engine assemblies, this OEM-compatible replacement installs directly into standard piston ring grooves to facilitate comprehensive maintenance, repair, and complete engine overhaul projects where restoring pressure integrity and controlling excessive oil consumption are vital for reliable machinery operation. Designed for compatibility primarily with various Yamaha motorcycle models requiring precise fitment standards, this component serves as a verified substitution for alternative manufacturer identification codes including the Yamaha 3Y1-11605-00-00, Yamaha 2A6-11605-00-00, and Yamaha 1T3-11605-00-00 piston rings during system integrator upgrades or scheduled service intervals.