Mercury Outboard 40hp Positive Negative Battery Cables 84-88439A4 84-88439A9 8ft Intakes but based on the numbers

but based on the numbers and images it seems to be the case

Found on Mercury Mark 25E 1955 & 1956 (This is the short version

Reed Block Assembly: 42963A 11

Bowl and Gasket: 384154

Mercury Outboard 40hp Positive Negative Battery Cables 84-88439A4 84-88439A9 8ft Intakes but based on the numbersRemoved from a Mercury Outboard 40hp Inline 2 cylinder Two 2 Stroke Oil Injected Part #'s Red Positive Battery Cable Terminal: 84 88439A 9, 84 88439A 25 Black Negative Battery Cable Terminal: 84 88439A 4, 84 88439A 26 Item Condition and Notes: Good Working Condition Should work on Most outboards About 8' Long Please Inspect Pictures for condition Yours should look like this one. Please ask if you are unsure if this part will work for you. Please send