This sale is
This OEM Mercury powerhead is new in the original Quicksilver box.
Mercury Power Head part number is 56120A76.
Cylinder block part numbers:
MERCURY... MER 848-5067A1 ->6064A1 SS SS
MERCURY... MER 848-6064A1 ->6434A1 SS SS
MERCURY... MER 848-6434A1 CYLINDER BLOCK
This brand new powerhead will fit some 20HP from 1973-1977 with serial number 3537531-4403786 ONLY.
Casting numbers include 73457 (exhaust plate) and "Super Hurricane".
Please compare your part numbers to ours. It is your responsibility to ensure this part will fit your application. If you have any questions or would like assistance please ask!
Thank you for shopping Green Bay Prop!!
Jocelyn-Theresa-T455B-T456B