SE421 Lower Unit Yamaha | Sterndrive Engineering 90-421 Select Motor/Shaft Size/Ratio::F250 / 25" Shaft / 2.0 Improves the overall performance of

Improves the overall performance of small HP engines

Captains Choice MP5

Centek Marine four inch 45-degree fiberglass elbow

Required Equipment on Boats with an Enclosed Accomodation Compartment (ABYC H-22

SE421 Lower Unit Yamaha | Sterndrive Engineering 90-421 Select Motor/Shaft Size/Ratio::F250 / 25" Shaft / 2.0 Improves the overall performance ofSE421 Lower Unit Yamaha Sterndrive Engineering 90 421 SE429 CR Lower Unit SEI 90 429 Replaces Counter Rotation only! SE429 Replaces LF250 lower units with dual water intakes. Also replaces early LF250 lower units with side water intakes. This unit has the watercooled bearing carrier. It is painted black but you can paint it to match your engine. SEI's drives come standard with a three year, fault free warranty. This means that the unit is covered for