Mercruiser

Replaces: 43-45814A5

(1.65:1 Ratio) (Drive Gear = 24 teeth Driven Gear = 24 teeth)

For: 6 Cyl. Inline S/N K9999999 & BELOW 

Replaces: 27-55810, 27-558101

Replaces: 76850A2

For all GM engines except MR/ALPHA/BRAVO

with "Triangular", 3-Bolt coupler

Used on all older Chevy engines with 2 piece rear main seals

Replaces: 76850A2

Replaces: Yanmar: 18643A5; Mercruiser: 12632A4, 18643A2, 18643A7

Engines: For V6 & V8 Engines with 14" Flywheel.

Flex plate style for lste model, small crankshaft bolt pattern, style engines

Installs and removes drive shaft bearing retainer on  MC-I, R-MR, Blackhawk, all Bravo, Alpha I, Alpha I Gen II drive units and all Alpha drives units.

Replaces: 91-12037

Alpha One, Gen II

Replaces: Mercruiser: 816431A1; Bombardier: 0775491

Replaces: 43713

For: Alpha Gen II, All Bravo

55, 100, 125 HP V4 Crossflow (1971-72)

Replaces: 45589A3

MC-1/R/MR/ALPHA ONE

MC-MR1-ALPHA ONE ALPHA ONE GEN II

Replaces: 45-55796

Replaces: 1623-815822A53

For: Ratios 1.47, 1.62, 1.81 & 1.94

Fits: Gen II (1998 & up) 0L 100040 & up

Serial number: OD469859 and up.

Replaces: 10-97934A1

For: R/MR/Alpha I/ Gen II/ Bravo

Replaces:Mercruiser: 27-49955, 27-8M0077608, 49953, 49955, 8M0077608; Volvo: 3851981, 3853469; Bombardier: 0508591, 3851981; Yamaha: YSC10231400C, YSG-14090-90-8G, YSG14090908G