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90-304-A - Gearcase, 2:1, Replaces Most Johnson/Evinrude Early Model V4

SEI Marine 90-304-A - Gearcase, 2:1, Replaces Most Johnson/Evinrude Early Model V4SEI Marine 90-304-A - Gearcase, 2:1, Replaces Most Johnson/Evinrude Early Model V4

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$1,095.00

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FULL WARRANTY

Part Number
90-304-A

Manufacturer
SEI Marine

See Recommended Installation Components below.

90-304-A - Gearcase, 2:1, Replaces Most Johnson/Evinrude Early Model V4

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.

  • Part Number : 90-304-A
  • Engine Type : Johnson Evinrude V4 (90°)
  • Gear Ratio : 2:1
  • Prop Rotation : RH
  • Bullet Diameter : 4 1/4”


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. See drawing list for drive-shaft part number, or call for assistance if needed.

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.

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.

Warranty (PDF)
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SEI is the largest manufacturer of aftermarket sterndrives and outboard lower units in the world. Every SEI complete gearcase and outdrive carries a 3-Year No-Fault Warranty.

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