MerCruiser 45-816919 45-816472 Driveshaft Alpha One Gen II Lower Unit 1991-1997 Flywheel ) S/N 2763442 & above

) S/N 2763442 & above (1970-1997)

Timing gear looks in good shape

overall good condition

These are used on Alpha One

pretty much used on both single and double solenoid trim pumps

MerCruiser 45-816919 45-816472 Driveshaft Alpha One Gen II Lower Unit 1991-1997 Flywheel ) S/N 2763442 & aboveItem Details MerCruiser Lower Unit Drive Shaft 45 816919 used in all MerCruiser Gen II Sterndrive gearcases 1991 1997 (Outdrive Serial Numbers OD469859 OK999999) Basically the difference with the 1998 & up stuff was the bearing used on the shaft as all of the aftermarket driveshafts replace 45 816919 45 816472 45 853648 45 853647 Replaces Equivalent: 45 816919, Sierra 18 2261 45 816919 was the "heavy duty" version of 45 816472 for the 1. 62 & 1. 47