GOOD USED USABLE CYLINDER CRANKCASE BLOCK OFF MODEL VTX691 V TWIN TECUMSEH ENGINE MAY FIT OTHER MODELS TOO SEE LAST PICTURE OF CYLINDER IT HAS SOME RUST AND A SCRATCH THAT YOU CAN FEEL MAY NEED HONED OR BORED????? THIS IS NON RETURNABLE IF YOU GET IT AND DON'T LIKE IT BORE SIZE IS 3.12.