This carburetor specifically designed as a replacement for Tohatsu outboard models It is intended to serve as a direct replacement for a range of Tohatsu OEM part numbers, including 3D5-03100, 3F0-03100-4, 3F0-03100, 3F0-03100-0, 3F0031000M, 3F0-03100-1, 3F0031001M, 3F0-03100-2, 3F0031002M, 3F0-03100-3, and 3F0031003M, Replaces for Mercury 823040 8230401 8230402 8230404 8230405 823040A1 823040A2 823040A4 823040A5 823040T06 8M0171810 3303-8231752 3303-815070, 3303815070 This carburetor is designed to fit Tohatsu 2 Stroke outboard engines with 2.5HP and 3.5HP ratings, also fit for Mercury Mariner 2 Stroke 1 Cylinder 2 hp 2.5 hp 3 hp 3.3 hp Replacing a worn-out or malfunctioning carburetor with this specialized replacement can significantly enhance the performance of your outboard engine. It ensures the correct air and fuel mixture, critical for efficient engine operation Constructed with great quality materials, this carburetor is built to withstand the demanding marine environment, ensuring durability and longevity