Usage Tips:Features： 1、Applicable Model: The outboard piston kit is replacement for Tohatsu M5B M4C M5BS, for NS5B NS4C NS5BS. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2、OE Number: The part number for reference is 369 00001 0. Please confirm whether it is consistent with the OE you need to avoid wrong buying and other problems. 3、Durable Construction: Piston ring set is made from durable metal alloy, sturdy and rust resistant, ensuring overall durability and stability, allowing for reliable performance in various conditions. 4、Easy Installation: Designed for refurbishing and replacing old and damaged pistons, our outboard engine piston kit can be easily installed, convenient and time saving, don't need too much tools or complicated steps. 5、Enhanced Performance: This piston ring set provides better sealing capability, ensuring optimal performance, extending the engine's lifespan and allows for smooth operation even under demanding conditions. Specification： Item Type: Outboard Piston Kit Material: Metal Alloy OE Number: 369-00001-0 Piston Diameter: Approx. 55mm / 2.2in Fitment: Replacement for Mariner, Replacement for Tohatsu Outboard Motor 4HP 5HP 2-Stroke Replacement for Tohatsu M5B - 2 Stroke PISTON & CRANK SHAFT 2003 Fit for NS5B - 2 Stroke PISTON & CRANK SHAFT 2003 Replacement for Tohatsu M4C - 2-stroke Tohatsu PISTON & CRANK SHAFT 2003 Fit for NS4C - 2-stroke PISTON & CRANK SHAFT 2003 Replacement for Tohatsu M5BS - 2-stroke Tohatsu PISTON & CRANK SHAFT 2003 Fit for NS5BS - 2-stroke PISTON & CRANK SHAFT 2003 Package List： 1 x Outboard Piston?Kit?(6pcs)