Sterndrive Engineering

      • SEI OMC Cobra Conversion Kit
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        $790.80
        $659.00

        SEI OMC Cobra Conversion Kit The SEI is designed to replace 1986-1993 Cobra drives that shift in the lower unit. Does NOT replace King Cobra drives. If using a fuel injected motor with the shift...

      • SEI Alpha 1 Gen1 Mercruiser Hose Kit
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        $161.99
        $134.99

        SEI Alpha 1 Gen1 Mercruiser Hose Kit for External Line Cylinders These are replacement hoses for 9B-102-01 Trim Cylinders.

      • SEI 90° Johnson/Evinrude 25" Drive Shaft
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        $250.79
        $208.99

        SEI 90° Johnson/Evinrude 25" Drive Shaft Replaces V4/V6 90° from 1976-1991 Cross Reference: OE# 435761 5000626 Aqua Power 2859 GLM 22432  

      • SEI 60° Johnson/Evinrude 20" Drive Shaft
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        $250.79
        $208.99

        SEI 60° Johnson/Evinrude 20" Drive Shaft Replaces V4/V6 60° from 1991-2006 Cross Reference: OE# 436234 5000615 Aqua Power 2865 GLM 22435  

      • SEI 90° Johnson/Evinrude 20" Drive Shaft
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        $250.79
        $208.99

        SEI 90° Johnson/Evinrude 20" Drive Shaft Replaces V4/V6 90° from 1992-2006 Cross Reference: OE# 436232 5000614 Aqua Power 2860 GLM 22433  

      • SEI Mercruiser  Alpha 1 Propshaft 6 Jaw
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        $438.05
        $365.04

        Sterndrive Engineering Alpha 1 Propshaft 6 Jaw Fits: Mercruiser I,R,MR Alpha I & Gen II drives 1973 to current Standard Right Hand Rotation Mercury Outboard 70-125 HP Metric Inline...

      • SEI Mercury Outboard DFI Alpha Repl Lower Unit 2.31:1 20"
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        $1,670.52
        $1,392.10

        SEI Mercury Outboard DFI Alpha Repl Lower Unit 2.31:1 20" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial...

      • SEI Mercury 2 Stroke 2.33:1 20" Replacement Lower unit
        $1,670.52
        $1,392.10

        SEI Mercury 2 Stroke 2.33:1 20" Replacement Lower unit Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number...

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      • SEI Mercury 2 Stroke 2.07:1 Replacement Lower unit
        $1,670.52
        $1,392.10

        SEI 205-A20 Mercury 2 Stroke 2.07:1 Replacement Lower unit Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial...

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      • SEI Mercury Outboard 3.0L Alpha Repl Lower Unit 1.75 20"
        $1,670.52
        $1,392.10

        SEI Mercury Outboard 3.0L Alpha Repl Lower Unit 1.75 20" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number...

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      • SEI Johnson/Evinrude V4 2.25: 1 Replacement Lower Unit
        $1,670.52
        $1,392.10

        SEI Johnson/Evinrude V4 2.25: 1 Replacement Lower Unit Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number...

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      • SEI Johnson/Evinrude V4 replacement Lower Unit
        $1,670.52
        $1,392.10

        SEI 305 Johnson/Evinrude 1995 - Present V4 Replacement Lower Unit Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine...

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      • SEI Johnson/Evinrude V4 Early Model Repl Lower Unit
        $1,670.52
        $1,392.10

        Sterndrive Engineering 304 Johnson/Evinrude V4 Early Model Repl Lower Unit Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your...

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      • SEI Mercury Outboard 3.0L Repl Lower Unit 1.62 25"
        $1,670.52
        $1,392.10

        SEI 216 Mercury Outboard 3.0L Repl Lower Unit 1.62 25" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number...

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