Hello, You are looking at a pair of cylinder heads off a 72 Custom 400 F/A snowmobile. They are in good used condition. Pics show condition. Could fit other years and models, but please do your own checking to make sure they will fit your application. If you have any questions please feel free to email me. Thank you!International buyers: If you are having the item shipped to the United States please be sure to state that in a message in your offer. Thank you!If you live in Alaska/Hawaii and the listing says that I will not ship to you, feel free to message me, I may ship to you for an additional shipping charge. Thank you!,International buyers: If you are having the item shipped to the United States please be sure to state that in a message in your offer. Thank you!If you live in Alaska/Hawaii and the listing says that I will not ship to you, feel free to message me, I may ship to you for an additional shipping charge. Thank you!