Feature: 1. OE Number: The referencing OE number of this outboard piston kit are 346‑00001‑1, 346‑00001‑2, 346‑00001‑3, 779‑96151, 96151, 779‑879194001, 879194001. 2. Fitment: The boat motor piston assy kit is a replacement for Tohatsu M NS 25HP 30HP 2 Strokes, replacement for Tohatsu 25 30 HP 2 strokes, please check before ordering. 3. Optimal Engine Performance: Designed to enhance the power and performance of your boat's outboard engine, could improves combustion efficiency and increased horsepower and torque. 4. Reliable and Durable: The 68mm piston assy kit is built to last. With its sturdy construction and dependable components, it can withstand the harsh marine environment. 5. Ideal Replacement: Direct replacement installation, meets or exceeds OEM standards for the replacement of old and damaged one on original vehicles. Specification: Item Type: Outboard Piston KitOE Number: Replacement for Tohatsu OEM Part Number: 346‑00001‑1, 346‑00001‑2, 346‑00001‑3Replacement for Mercruiser Part Number: 779‑96151, 96151, 779‑879194001, 879194001 Piston Diameter: Approx. 68mm/2.68inFitment:Replacement for Tohatsu Outboard Models: M NS 25HP, 30HP 2 strokes Replacement for Tohatsu 25, 30 HP 2 strokes. Package List: 1 x Outboard Piston Kit (6 Accessory) Note: Please double check the part number of your item, matching information is for reference only.Installation by a professional mechanic is highly recommended