Volvo Penta 3868077 3857007 Cobra SX DP-S Upper unit Gearcase 4.3 1.66 1.43 1.51 Piston Sets 13-33734 Lock Washer

13-33734 Lock Washer

The easy way to tell between a mechanical shift & hyrdo-mechanical shift drive is that the hydro-mechanical ones DO NOT have the visible anode square chunk next to the six little holes on each side toward the rear of the lower unit

Wires were Okay during testing

3927796 AE

Volvo Penta 3868077 3857007 Cobra SX DP-S Upper unit Gearcase 4.3 1.66 1.43 1.51 Piston Sets 13-33734 Lock WasherPart Number(s) Included Volvo Penta OMC Joint Venture 3868077 3850966 3856181 3857007 Cobra SX Sterndrive Upper Gearcase Unit From a 4. 3L GL 1994 Model 22 23 Teeth For the Upper Gears General Application Compatibility So 1. 66 is stamped on the plate, but basically the uppers only came in 2 flavors and the lowers came in 5 flavors, 1. 66 reflected the "overall" ratio after combining the upper & lower, hopefully this guide clears up any confusion.