Genuine Parsun block, cylinder 1/8" F15-07010004 is compatible with Mercury 479452
Currently out of stock, order now and the part will be shipped as soon as it is back in stock
3 pieces "block, cylinder 1/8" F15-07010004" are being used on the page "F50/F60 crankcase"
They are sold one by one, if you need a complete set you need to buy multiple.