Sterndrive Engineering

Shop our Sterndrive Engineering (SEI) collection for quality aftermarket stern drive units, SEI outdrives, and drive components. SEI Marine products are a proven alternative to OEM sterndrive parts, offering reliable performance at a competitive price for MerCruiser-compatible and other popular drive configurations. Go2marine carries SEI sterndrive products for a wide range of applications. Browse our full SEI collection.

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Replacement for Mercruiser Gen II Sterndrive Unit, Lower Assembly only, SE116Replacement for Mercruiser Gen II Sterndrive Unit, Lower Assembly only, SE116
Replacement for Mercruiser Gen II Sterndrive Unit, Lower Assembly only, SE116
From $1,072.50
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SEI Mercruiser Bravo Transom Assembly & Gimbal Housing, 9F-121SEI Mercruiser Bravo Transom Assembly & Gimbal Housing, 9F-121
SEI Mercruiser Bravo Transom Assembly & Gimbal Housing, 9F-121
$2,172.50
Trim Pump Alpha One, 1986-Present, Replaces OE 865380A25
Trim Pump Alpha One, 1986-Present, Replaces OE 865380A25
$330.00
Complete Installation Kit, SE116
Complete Installation Kit, SE116
$49.50
Trim Motor Relay Kit, WH-476
Trim Motor Relay Kit, WH-476
$48.40
Trim Cylinders, SE121 for Bravo I, Bravo II and Bravo III Sterndrives
Trim Cylinders, SE121 for Bravo I, Bravo II and Bravo III Sterndrives
$176.00
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Outboard Tilt/Trim Unit, Mercury/Mariner 3-Ram, 3-Wire,1985-Present
Outboard Tilt/Trim Unit, Mercury/Mariner 3-Ram, 3-Wire,1985-Present
$988.90
Trim Hose Kit 9B-102A, Alpha I Gen I Sterndrives, 1972-1990
Trim Hose Kit 9B-102A, Alpha I Gen I Sterndrives, 1972-1990
$115.50
SEI, SE106, Replacement Sterndrive, 1.47SEI, SE106, Replacement Sterndrive, 1.47
SEI, SE106, Replacement Sterndrive, 1.47
$1,930.50
Tilt / Trim / Starter Solenoid, OMC & Others, 12 Volt, SW94
Tilt / Trim / Starter Solenoid, OMC & Others, 12 Volt, SW94
$26.40
Inboard Starter Motor, Starter Motor, 6 Liter GM Engines, Crusader, Indmar & Pleasurecraft, 10103
Inboard Starter Motor, Starter Motor, 6 Liter GM Engines, Crusader, Indmar & Pleasurecraft, 10103
$239.80
Alternator, Volvo 8.1L, 12 Volt, 70 Amp, Dual 2" Mount Feet, 6-Groove 67mm Serp. Pulley, Replaces Volvo # 3862613
Alternator, Volvo 8.1L, 12 Volt, 70 Amp, Dual 2" Mount Feet, 6-Groove 67mm Serp. Pulley, Replaces Volvo # 3862613
$437.80
Trim Tab Power Unit, 3-Wire 24V Motor, Reservoir & 2-Hose Pump
Trim Tab Power Unit, 3-Wire 24V Motor, Reservoir & 2-Hose Pump
$591.80
Bravo Drive Shower, Halo Max by SimrekBravo Drive Shower, Halo Max by Simrek
Bravo Drive Shower, Halo Max by Simrek
$269.44
SE128 Lower 1.81, 2.00 & 2.20 Ratio's (Replaces Bravo Three Lowers)
SE128 Lower 1.81, 2.00 & 2.20 Ratio's (Replaces Bravo Three Lowers)
$2,245.00
Replacement For Mercruiser Gen II Sterndrive Unit, Upper Assembly only, SE116Replacement For Mercruiser Gen II Sterndrive Unit, Upper Assembly only, SE116
Replacement For Mercruiser Gen II Sterndrive Unit, Upper Assembly only, SE116
$962.50
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Replacement for Mercruiser Gen II Sterndrive Unit, Complete Upper & Lower Assembly, SE116Replacement for Mercruiser Gen II Sterndrive Unit, Complete Upper & Lower Assembly, SE116
Replacement for Mercruiser Gen II Sterndrive Unit, Complete Upper & Lower Assembly, SE116
From $2,150.50
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Small Frame Alternator, Mercruiser, OMC, Volvo Mando Style, 2" Mounting Feet, 12 volt
Small Frame Alternator, Mercruiser, OMC, Volvo Mando Style, 2" Mounting Feet, 12 volt
From $178.00
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SEI Hydro-Hatch Replacement Hydraulic CylinderSEI Hydro-Hatch Replacement Hydraulic Cylinder
SEI Hydro-Hatch Replacement Hydraulic Cylinder
From $305.80
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SEI Mercruiser Alpha 1 Gen 2 Transom Assembly & Gimbal Housing, 9F-116SEI Mercruiser Alpha 1 Gen 2 Transom Assembly & Gimbal Housing, 9F-116
SEI Mercruiser Alpha 1 Gen 2 Transom Assembly & Gimbal Housing, 9F-116
$2,062.50
SEI, SE106, Replacement Sterndrive, Lower Assembly, Std. RotationSEI, SE106, Replacement Sterndrive, Lower Assembly, Std. Rotation
SEI, SE106, Replacement Sterndrive, Lower Assembly, Std. Rotation
$1,072.50
Complete Installation Kit, SE106
Complete Installation Kit, SE106
$60.50
Starter, V8 Chris Craft/Volvo Penta, 12v, 9-Tooth, CW Rotation
Starter, V8 Chris Craft/Volvo Penta, 12v, 9-Tooth, CW Rotation
$261.80
Alpha Gen I Transom Seal Kit, SE106, 9A-108
Alpha Gen I Transom Seal Kit, SE106, 9A-108
$87.95

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