Feature: 1. OE Number: The referencing OE number of this cylinder head are 688‑11111, 6H1‑11111, 688 11111 02 1S, which is molded and designed depend on the original data. 2. Fitment: The outboard cylinder head is a replacement for 688 series 2 Stroke, for 85 hp 3‑cyl models 1990 and up, for 90 hp 3‑cyl. models 1984 and up. 3. High Performance: The outboard cylinder head could fit perfectly into the original cylinder, ensuring a perfect seal and full combustion of the fuel chamber. 4. Durable Construction: Made of high strength aluminium alloy construction for maximum durability, reliable and stable performance. 5. Perfect Replacement: Designed to replace worn and old cylinder head cover, restoring engine performance and providing more power. Specification: Item Type: Cylinder Head OE Number: 688‑11111, 6H1‑11111, 688 11111 02 1S Material: Aluminium alloy Fitemnt: Fits for 688 series 2 Stroke Fits for 85 hp 3-cyl. (1990 and up) Fits for 90 hp 3-cyl. (1984 and up). Package List: 1 x Cylinder Head Note: Please double check the part number of your item, matching information is for reference only.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!