MerCruiser 66156A6 66156 Gimbal Bell Housing Pre-Alpha 1972-1974 W/O Senders Transom Plate 3L V6 models as it

3L V6 models as it is for a 2-piece rear main seal

Removed from 1991 OMC 4

I am not quite sure what it's from but KB4 & KD4 is my best guess at this time

Found on Johnson / Evinrude Models 1968-1972 (And Possibly Others)

For Mounting the lower gearcase Unit to the Upper gearcase Unit Propshaft Drive Shaft Housing

MerCruiser 66156A6 66156 Gimbal Bell Housing Pre-Alpha 1972-1974 W/O Senders Transom Plate 3L V6 models as itIF YOUR GIMBAL HOUSING HAS TRIM SENDERS THIS IS NOT THE RIGHT BELL HOUSING Part Numbers: Bell Housing Assembly: 66156A6 (stamped 66156 but equivalent to 63340) It will generally be the best practice to try and match the number stamped in your current bell housing. This is for MerCruiser applications 1972 1975ish where there the assembly DOES NOT have trim senders covering the pivot pins but also is using the newer style of gimbal bellows Also the