SEI Marine Products

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha 2.6 liter (90 degree) engines.
1984 to present.
1.86:1 (14 / 26 tooth count).
Standard rotation only.
Not for use with low water pick up gearcase.
Not for use with dual propeller gearcase.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-416-800K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha 2.6 liter (90 degree) engines.
1984 to present.
2:1 (14 / 28 tooth count).
Standard rotation only.
Not for use with low water pick up gearcase.
Not for use with dual propeller gearcase.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-416-801K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha 4 cylinder four stroke engines (150 HP only).
2004 to present.
2:1 (14 / 28 tooth count).
Standard rotation only.
Not for use with low water pick up gearcase.
Not for use with dual propeller gearcase.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-416-802K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha V6 2 stroke 2.6 liter (90 degree) engines.
1984 to present.
1.86 (14 / 26 tooth count).
Counter rotation only.
Not for use with low water pick up gearcase.
Not for use with dual propeller gearcase.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-418-800K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha 4 cylinder four stroke engines (150 HP only).
2004 to present.
2:1 (14 / 28 tooth count).
Counter rotation only.
Not for use with low water pick up gearcase.
Not for use with dual propeller gearcase.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-418-801K

Includes all seals, o'rings, bearing and gears for the lower unit.

Fits most Yamaha V6 3.1 and 3.2 liter (76 degree) engines.
1993 to current.

1.81: 1 gear ratio (16/29 tooth count).
Standard rotation only.
Not for use in low water pick up gearcases.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-421-800K

Includes all seals, o'rings, bearing and gears for the lower unit.

Fits most Yamaha V6 4 stroke 200 - 225 HP engines.
2002 to current.

2:1 gear ratio (13/30 tooth count).
Standard rotation only.
Not for use in low water pick up gearcases.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-421-801K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha V6 3.1 and 3.2 liter (76 degree) engines.
1993 to current.

Counter rotation only.
Not for use in low water pick up gearcases.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-428-800K

Includes all seals, o'rings, bearings and gears for the lower unit.

Fits most Yamaha V6 (3.3 liter Four Stroke) 200-225 HP.
2002 to current.

Counter rotation only.
Not for use in low water pick up gearcases.

GEAR REPAIR KIT Fits Yamaha Repair Kit 91-428-801K

Includes all seals, o'rings, bearings and gears for the lower gearcase.

Fits most V6 and V8 Cobra gearcases.
1986-1989.
For gearcases with 1-3/16" diameter propshafts.
Counter rotation.

Not for use with King Cobra gearcases.

Gear Set 1.47
Fits 1973 and newer I, R, MR, Alpha I drives. Gen II drives Serial Number 0K999999 and below

Gear Set 1.62
Fits 1973 and newer I, R, MR, Alpha I drives. Gen II drives Serial Number 0K999999 and below

Gear Set 1.81
Fits 1973 and newer I, R, MR, Alpha I drives. Gen II drives Serial Number 0K999999 and below

Fits 1973 and newer I, R, MR, Alpha I drives.
Also fits Gen II drives Serial Number 0K999999 and below.

Fits Mercury & Mariner 2.0 / 2.4 / 2.5 liter engines
Standard rotation, non-ratcheting
Fits 3.265" Diameter forward bearing only
15/28 Teeth 1.87:1 Ratio

Fits Mercury & Mariner 2.0 / 2.4 / 2.5 liter engines
Standard rotation, non-ratcheting
Fits 3.265" Diameter forward bearing only
14/28 Teeth 2:1 Ratio

Fits Mercury/Mariner L3 & L4 1987 to Current.
Also fits some "Bigfoot" 30-65 HP.
Also fits most Force 90-120 HP, 1995-1999.
6 Jaw reverse only.
Includes drain plugs.

For use with two bolt style propshaft bearing carrier.
4.750" Diameter Bullet.
Has provisions for pitot hook-up.
Comes with pinion bearing, drain plugs and water intake screens.
Also used on some V4 engines.

Fits most Mercury / Mariner 2.0, 2.4 & 2.5 Liter V6 engines.
4 3/4" bullet diameter.
3.265" OD forward bearing.
Includes, pinion bearing, alignment dowels,drain plugs and mounting studs.

Fits all V4 2 stroke Yamahas, 115-130 Hp.
4 1/4" Bullet diameter.
Includes pinion bearing, drain plugs, and water intake screens.