Mercury Kiekhaefer 31-21146 Torrington Roller Bearing B-1112 Driveshaft Mark MK Exhaust Manifold Stamped part numbers are 98704

Stamped part numbers are 98704 & 98703

Also looks like one of the ends was replaced at some point

For use with OMC Cobra V6 4

AQ-275 AQ-275A AQ-280 AQ-280T AQ-280T AQ-280PT AQ-280E

Mercury Kiekhaefer 31-21146 Torrington Roller Bearing B-1112 Driveshaft Mark MK Exhaust Manifold Stamped part numbers are 98704Item Description Mercury Part Number 31 21146 Torrington Roller Bearing B 1112 Propeller and Driveshaft Possibly used with Mark 7, KE4, 40, KG9, KF9, KG4, KF7 KE7, KG7 1939 1953 (and possibly others). Make sure to check and see that the number on your bearing is the same. Purchase with confidence! General Disclaimer (please read) These are New Old Stock Parts from a large mercury Mark & K models cabinet I have. Some of these parts might work on more