Sterndrive Engineering

      • Black SEI SE316 Johnson Evinrude Magnum replacement lower unit
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        $1,745.00

        SEI SE316 Johnson Evinrude Magnum Lower Unit – 1.85:1 The SEI 90-316-A SE316 is an aftermarket replacement lower unit for select Johnson and Evinrude outboards equipped with Magnum or Magnum...

      • SEI SE308 Johnson Evinrude counter-rotation replacement lower unit
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        $1,745.00

        SEI SE308 Johnson Evinrude Counter-Rotation Lower Unit – 1.83:1 The SEI 90-308-B SE308 is an aftermarket replacement lower unit for select Johnson and Evinrude outboards requiring counter...

      • SEI SE216 90-216-BS replacement lower unit with Alpha driveshaft
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        $1,745.00

        SEI SE216 Lower Unit – 1.62:1 – Alpha Driveshaft The SEI 90-216-BS SE216 is an aftermarket replacement lower unit featuring a 1.62:1 gear ratio and Alpha driveshaft configuration...

      • SEI SE216 90-216-BS replacement lower unit with Alpha driveshaft
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        $1,545.00

        SEI SE216 Lower Unit – 1.62:1 – Alpha Driveshaft The SEI 90-216-BS SE216 is an aftermarket replacement lower unit featuring a 1.62:1 gear ratio and Alpha driveshaft configuration. This...

      • SEI SE117 OMC Cobra counter-rotation replacement lower unit
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        $1,745.00

        SEI SE117 OMC Cobra Counter-Rotation Lower Unit The SEI SE117 is an aftermarket replacement lower unit for select 1986–1993 OMC Cobra sterndrives. Designed for twin-engine applications...

      • SEI 90-403 jet drive for Yamaha 50–60 HP four-stroke outboards
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        $1,745.00

        SEI 90-403 Jet Drive for Yamaha 50–60 HP Four-Stroke Outboards – 16T The SEI 90-403 is an aftermarket jet drive for select Yamaha 50 and 60 HP four-stroke outboards with a 20" shaft and...

      • SEI 90-901 jet drive for Tohatsu four-stroke outboards
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        $1,745.00

        SEI 90-901 Jet Drive for Tohatsu 40–60 HP Four-Stroke Outboards The SEI 90-901 is an aftermarket jet drive for compatible Tohatsu 40–60 HP four-stroke outboards from 2014 and newer. It...