OEM Keihin PD 41B Carburetor Carb Rack Honda CB750 CB 750 1977 77. Part number 41B APD .  Please do your research. This carb came with a bunch of others from a closed down motorcycle shop. It has been on the shelf for years. It is dirty so it will definitely need a rebuild. The pistons and the plates are not frozen. Missing one top cap and a few screws. What you see is what you will receive, no more, no less.. You are buying this carb untested, as is, no returns. Please make sure it's what you need.