Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks
Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks

Mercury 4921A3 Gearcase Lower Unit Short Shaft Tested Good Shafts No Leaks

We have 1 in stock.

$244.95 Sale

Has minor skeg damage, will not affect its performance, see pictures.  This unit has good quality steel for shafts.  Many of these have highly pitted shafts and cannot be made to seal up.  This one does not have any shaft pitting.  Shifts properly, passes pressure and vacuum tests with zero drop.  This is for Short shaft, 15" transom motors. 

Fits one 4hp or 40 model, two 7.5hp or 75 models and 2 10hp or 110 models.   Before buying you need to verify it will fit.  If you are not sure, send me your serial number and I will check.

Impeller was not checked and should be replaced before use. 

NO OIL IN UNIT, MUST BE FILLED BEFORE USE.
Brand: Mercury
Manufacturer Part Number: 4921A3
Warranty: 30 Day

Condition: Used
Condition Description: minor Skeg damage- see photos, impeller should be changed, no oil in unit. Good functional gearcase.