MerCruiser 43-18411A2 Upper Unit Gear Set V8 305 350 1.50:1 Alpha One Gearcase steering wheel Sometimes looks like 393776

Sometimes looks like 393776

Mercury Quicksilver

MERCRUISERII-TR 1973-1976

KF5 KF3 6A (and possibly others)

35-49088A 2

MerCruiser 43-18411A2 Upper Unit Gear Set V8 305 350 1.50:1 Alpha One Gearcase steering wheel Sometimes looks like 393776Item Details The gears are For All V8 applications for Pre Alpha R MR ALPHA ONE Gen 1, so 1970 1990 as a general rule. (Actually these were also used on Gen II drives 1991 1997 but you would have to swap out the shafts and bearings) The gear set here is MerCruiser 43 18410 43 18411 1 > 43 18411A2 (Also Equivalent to Sierra 18 2202) 20 22 (tooth count) 1. 50: 1 1. 47: 1 Ratio for V8 GM Chevy 5. 0L 305 & 5. 7L 350 sterndrive engines. (Early Ford as