Mercury Outboard 140hp 115hp Exhaust Driveshaft Housing Mid Section 1573-5239A4 Exhaust Boots Related Boat Manufacturers:

Related Boat Manufacturers:

Likely Found on Johnson / Evinrude 25hp & 35hp Models 1977-1978

but since the numbers don't seem to supersede directly

it would be probably wise to rebuild it

This should technically replace the later kind with the Ventilated-gear tooth looking exterior as well

Mercury Outboard 140hp 115hp Exhaust Driveshaft Housing Mid Section 1573-5239A4 Exhaust Boots Related Boat Manufacturers:Removed from a 1979 Mercury Outboard 140hp (S N 552993) Inline 6 cylinder 2 Stroke Item Condition and Notes: Good Condition This has the Two Bolt Mount for exhaust extension Plate: (There is a similar one with a 1 bolt pattern that looks the same. Make sure yours has the two bolt holes) Please Inspect Pictures for condition Part #'s Drive shaft Housing: 1573 5239A4, 5239A 4 Exhaust extension Plate: 66097, 74257A 3, 98518A 4, 43290A 4 Exhaust Tube: