SE121 Complete 1.65 Ratio Side Water Inlet (Replaces Bravo One®) Parts-Mercuiser-Gen-I-Cylinders Replaces Mercruiser Sterndrive R/MR/Alpha One

Replaces Mercruiser Sterndrive R/MR/Alpha One 1983-1990

Replaces most Mercruiser Sterndrives 228 HP and up from 1974-1990

Replaces OE# 126870For 1-1/4 propshaft units with 3 blade propeller

Shift shaft kit to convert 70-125 HP motors from a 3 jaw lower unit to a 6 jaw lower unit

It replaces gear cases on Yamaha 2 Stroke V6 3

SE121 Complete 1.65 Ratio Side Water Inlet (Replaces Bravo One®) Parts-Mercuiser-Gen-I-Cylinders Replaces Mercruiser Sterndrive R/MR/Alpha OneReplaces Mercruiser Bravo One 1. 36 Ratio with Side Water Inlets. OE# 5120165KZ Not a replacement for Bravo X,XR or XZ drives. Rated for up to 425HP. Ships in two boxes. Does not include Install Kit or Anode Kit. Please see related items below.