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SEI Engineering ®

SEI Engineering ®
Aftermarket
Gearcase Complete Yamaha V4 25" shaft
Gearcase Complete Yamaha V4 25" shaft
€2,088.45
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In stock
Complete Sterndrive Alpha One Gen. II (2.4)
Complete Sterndrive Alpha One Gen. II (2.4)
On Request
Add to cart
Out of stock
Complete Sterndrive Alpha One Gen. II (1:62)
Complete Sterndrive Alpha One Gen. II (1:62)
On Request
Add to cart
Out of stock
Complete Sterndrive MerCrusier Alpha One Gen. I, ratio 1:30 (aftermarket)
Complete Sterndrive MerCrusier Alpha One Gen. I, ratio 1:30 (aftermarket)
On Request
Add to cart
Out of stock
Aftermarket
Gearcase Complete Yamaha V6 25" shaft
Gearcase Complete Yamaha V6 25" shaft
€1,733.07
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Expected delivery: Jan 19, 2026
Aftermarket
Gearcase Mercury 2.0-2.5L V6 V115-V200 DFI XR-6 110, 140 JET 25” 1.87:1
Gearcase Mercury 2.0-2.5L V6 V115-V200 DFI XR-6 110, 140 JET 25” 1.87:1
€1,888.45
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Expected delivery: Jan 19, 2026
Aftermarket
Complete Lower Unit Alpha One Gen. II CR
Complete Lower Unit Alpha One Gen. II CR
€1,835.86
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In stock
Aftermarket
Lower Gear Housing (empty) for OMC Cobra, Johnson & Evinrude
Lower Gear Housing (empty) for OMC Cobra, Johnson & Evinrude
On Request
Add to cart
Out of stock
Complete Sterndrive MerCrusier Alpha One Gen. I, ratio 1:62 (aftermarket)
Complete Sterndrive MerCrusier Alpha One Gen. I, ratio 1:62 (aftermarket)
On Request
Add to cart
Out of stock
Aftermarket
Gearcase Mercury 3.0L EFI DFI, 200-250 hp 20” 1.75:1
Gearcase Mercury 3.0L EFI DFI, 200-250 hp 20” 1.75:1
€1,756.97
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Expected delivery: Jan 19, 2026
Aftermarket
Gearcase, complete for Yamaha 200-250 hp outboards (counter-rotation)
Gearcase, complete for Yamaha 200-250 hp outboards (counter-rotation)
€3,494.02
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Expected delivery: Jan 13, 2026
Aftermarket
Lower gearcase complete Johnson/Evinrude V4 (1995-2006)
Lower gearcase complete Johnson/Evinrude V4 (1995-2006)
On Request
Add to cart
Out of stock
Complete Sterndrive Alpha One Gen. I (1:81) CR
Complete Sterndrive Alpha One Gen. I (1:81) CR
On Request
Add to cart
Out of stock
Complete Sterndrive Alpha One Gen. II (1:47)
Complete Sterndrive Alpha One Gen. II (1:47)
On Request
Add to cart
Out of stock
Aftermarket
Lower Drive Housing Alpha One Gen. II
Lower Drive Housing Alpha One Gen. II
€851.79
Add to cart
Out of stock
Aftermarket
Complete Upper Unit Alpha One Gen. II (1:94)
Complete Upper Unit Alpha One Gen. II (1:94)
€1,486.85
Add to cart
In stock

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