SEI Marine Products

Replaces OE# 1667-9011-J37

Replaces OE# 9011J29

Replaces OE# 1667-9011J41

Replaces OE# 1667-9011J23

Replaces OE# 1667-9011-J39

Replaces OE# 9011J31

SE 206, 1.87:1, 20" Driveshaft

SE 206, 1.87:1, 25" Driveshaft

SE 206, 2:1, 20" Driveshaft

SE 206, 2:1, 25" Driveshaft

The paint color for all lower units is transitioning to black as inventory becomes depleted. Therefore, color may vary depending on product availability at time of order

This SE304 Gear Case replaces most early style Johnson/Evinrude V-4 Lower Units from 1978-1998 with a 4-1/8 bullet diameter. The case has internal Water Screens and a pointed cavitation plate at the rear.

The unit does not include the upper drive-shaft. If your old unit has a one piece shaft you will need to purchase an upper drive-shaft. We use the newer style stub-shaft with a clip. If your upper shaft is not the newer style you will need to replace it. Our unit does not include a Water Pump. Our unit does not include the shift shaft. You will need to reuse your old one and adjust it. You may paint the unit to match your Outboard.

SE306 Uses the Ocean Pro style water intakes. Does not fit units older than 1978. The Bullet diameter is 4-3/4 inches. Will not replace Magnum or Lightning cases. Does not include Upper driveshaft. If your old unit has a one piece shaft you will need to purchase an upper driveshaft. We use the newer style stubshaft with a clip. If your upper shaft is not the newer style you will need to replace it. Our unit does not include a Water Pump. Our unit does not include the shift shaft. You will need to install your old one and adjust it. You will need to use a 1991 or newer prop thrust washer.
The paint color for all lower units is transitioning to black as inventory becomes depleted. Therefore, color may vary depending on product availability at time of order. You may paint the unit to match your Outboard.
Fits OMC-1-83-R-V-6-5005401

SE306 Uses the Ocean Pro style water intakes. Fits V4 Johnson/Evinrude with the 4-3/4 bullet diameter V6 case. Uses the Ocean Pro style water intakes. Does not include Upper driveshaft. If your old unit has a one piece shaft you will need to purchase an upper driveshaft. We use the newer style stubshaft with a clip. If your upper shaft is not the newer style you will need to replace it. Our unit does not include a Water Pump. Our unit does not include the shift shaft. You will need to install your old one and adjust it. You will need to use a 1991 or newer prop thrust washer.
The paint color for all lower units is transitioning to black as inventory becomes depleted. Therefore, color may vary depending on product availability at time of order. You may paint the unit to match your Outboard.
Fits OMC-2-25-R-V-6 With V-4-Ratio-0439982

Replaces most 200HP/225HP and some 250HP Yamaha 76 Degree V6 Counter Rotation Motors with a 1.81 Ratio
Replaces most 200HP/225HP Yamaha V6 4-Stroke Counter Rotation Motors with a 2.00 Ratio
For Counter Rotation only, do not use for Standard Rotation
The paint color for all lower units is transitioning to black as inventory becomes depleted. Therefore, color may vary depending on product availability at time of order.

Replaces most Mercruiser Sterndrives 160/165 HP from 1967-1977.
Comes with a 8-1/8 old style input yoke.
Does not include Complete Install Kit or Anode Kit.
Up to 300 HP (SEI does not warranty applications over 300 HP)
Replaces Mercruiser Sterndrive 160 1967-1969 with trim and tilt.
Replaces Mercruiser Sterndrive 165 1970-1977 with trim and tilt.

SE104 1.62 Complete - Short Yoke C.R. (Replaces Mercruiser Alpha One)
Counter Rotation only. Do not use for Standard Rotation.
Comes with a 8-1/8 input yoke.
Does not include Complete Install Kit or Anode Kit.
This drive is generally used on older inline 6 and 4 cylinder engines.

Replaces most Mercruiser Sterndrives 170/185 HP from 1976-1982.
Comes with a 8-1/8 old style input yoke.
Does not include Complete Install Kit or Anode Kit.
Up to 300 HP (SEI does not warranty applications over 300 HP)
Replaces Mercruiser Sterndrive 470 1976-1982
Replaces Mercruiser Sterndrive 485 1980-1982

SE104 1.81 Complete - Short Yoke C.R. (Replaces Mercruiser Alpha One)
Counter Rotation only. Do not use for Standard Rotation.
Comes with a 8-1/8 input yoke.
Does not include Complete Install Kit or Anode Kit.
This drive is generally used on older inline 6 and 4 cylinder engines.

Replaces most Mercruiser Sterndrives 120/140 HP from 1967-1982.
Comes with a 8-1/8 old style input yoke.
Does not include Complete Install Kit or Anode Kit.
Up to 300 HP (SEI does not warranty applications over 300 HP)
Replaces Mercruiser Sterndrive 120 1967-1969 with trim and tilt.
Replaces Mercruiser Sterndrive 140 1967-1969 with trim and tilt.
Replaces Mercruiser Sterndrive 120 1970-1982 with trim and tilt.
Replaces Mercruiser Sterndrive 140 1970-1982 with trim and tilt

SE104 1.94 Complete - Short Yoke C.R. (Replaces Mercruiser Alpha One)
Counter Rotation only. Do not use for Standard Rotation.
Comes with a 8-1/8 input yoke.
Does not include Complete Install Kit or Anode Kit.
This drive is generally used on older inline 6 and 4 cylinder engines.