SEI Marine Products

SE205 Install Kit includes:
Qty 5 Mounting Nut 98-205-12
Qty 5 Washer, mounting nut 98-205-83

The SE 206 gear case replaces most Mercury 2.0, 2.4 and
2.5 liter gear cases with 4-3/4 Bullet Diameter.\

Anode kit for SE206 and SE216 Outboard Lower Units.
Also fits, Mercury 2.0, 2.4, 2.5 and 3.0 Liter Lower Units.
Check for prop clearance before using.
Kit includes:
98-102-36 Trim Tab
98-116-34 Trim Tab Bolt
Qty. 2 98-206-01 Anode (rectangular)
98-206-02 Screw, upper anode (M6 x 40 18-8 SS)
98-206-03 Nut, upper anode (M6 nylon locknut 18-8 SS)

Install kit for SE 206

SE216
Replaces Most Mercury 3.0L Lower Units
13 Splines
20, 25, and 30 inch Shafts.
If you have an 8 Spline drive shaft you will need to buy the stub shaft unit
and purchase an upper driveshaft from an OE dealer.
20" 45-824114A 1
25" 45-823901A 1
30" 45-824115A 1 (This item is no longer available from the OE. You will need to source a used one, or fix your old drive.)
If you have a 13 spline two piece shaft just purchase the appropriate
one piece shaft.
The SEI 216 gear cases are supplied with the correct water tube coupling for units with a serial number of OG438000 and higher. If your unit has a lower serial number, you will need to use your old water coupling or purchase the correct part (SEI part number 96-116-12K).

SE 216 Install Kit

SE218 Counter Rotation
Replaces Most Mercury 3.0L Counter Rotation Lower Units
Do not use for standard rotation
13 Splines
25 and 30 inch Shafts.
If you have an 8 Spline drive shaft you will need to buy the stub shaft unit
and purchase an upper driveshaft from an OE dealer.
25" 45-823901A 1
30" 45-824115A 1 (This shaft is no longer available from the OE. You will need to either source a used one or repair your old unit.)

Qty. 5 98-102-25 3/8 Washer
Qty. 5 98-306-92 Bolt, 3/8-16 x 1 3/4" SS, 9/16" HH Shouldered
Qty. 1 98-306-93 Washer, mounting screw, 7/16 M x 3 1/2 Hex 18-1 SS
Qty. 1 98-306-95 Bolt, 7/16-14 x 3 1/2" SS, 5/8" HH Shouldered

Anode kit for SE304 and SE306

SE304/305/306 Trim Tab Kit

SE305 Anode Kit

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 later model Johnson V-4 Lower Units from 1995-2006 with a 4-1/8 bullet diameter. Has external water screens and the rear cavitation plate is flat. 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 may paint the unit to match your Outboard.

SE306 Installation Kit

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. SE308 is a Counter Rotation Unit. Gear Ratio is 1.83:1
Fits-OMC-1-83-R-V-6-Counter-Rotation

Replacement unit for Johnson Evinrude Magnum and Magnum 2 lower units. It is a direct replacement for the Mag II If you are replacing a Mag (the original) you will need to remove the alignment pins from the new lower unit. They are only offered in Black. Does not come with upper drive shaft, shift shaft, water pump or water intake screens. Replaces OE#'s 5007699 5009081 5009259 5007705 5009082 5009260

Replacement unit for Johnson Evinrude Magnum and Magnum 2 lower units. It is a direct replacement for the Mag II If you are replacing a Mag (the original) you will need to remove the alignment pins from the new lower unit. They are only offered in Black. Does not come with upper drive shaft, shift shaft, water pump or water intake screens. Replaces OE#'s 5007699 5009081 5009259 5007705 5009082 5009260

Replaces all Yamaha V-4 2-Stroke Standard Rotation Lower Units.
115HP and 130 HP only
Also fits 2000-2014 F115 4 stroke Standard Rotation models
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 F115 Yamaha gear cases on 4-Stroke Engines with 20 inch drive shaft.
(115HP 4-Stroke Only 2000-2014 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 Yamaha gear cases on 4-Stroke Engines with 25 inch drive shaft.
(F115 115hp Standard Rotation 2000-2014 only)
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

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 Yamaha gear cases on V-4 2-Stroke Engines with 20 inch drive shaft.
(115HP and 130 HP only)
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

Will not work on any 4-Stroke Engine applications.