SEI SE128 Complete Sterndrive for MerCruiser Bravo ThreeThe SEI SE128 Complete Sterndrive is an aftermarket replacement for MerCruiser Bravo Three drives. Featuring dual water intakes and rated for applications up to 425 horsepower, it includes upper and lower units and is available in six gear ratios to match your existing drive.This item is subject to a 20% restocking fee.Year, serial number, and horsepower are required to process your order. Please contact us with this information after placing your order. Processing will be delayed until this information is received.Features SEI SE128 aftermarket replacement for MerCruiser Bravo Three sterndrives; Includes upper and lower units; Dual water intakes; Rated for applications up to 425 HP; Available gear ratios: 1.36:1, 1.50:1, 1.81:1, 2.00:1, 2.20:1, and 2.43:1; Fitment and Gear Ratio SelectionSelect the gear ratio that matches your existing MerCruiser Bravo Three drive. Confirm your application and existing ratio before ordering. This sterndrive is not a replacement for Bravo X, XR, or XZ drives.Assembly InformationThe upper and lower units ship in separate boxes. Hardware required to join the two halves is not included and must be purchased separately.