New OBR / Mercruiser 1969-1990 Alpha I 4-CYL/V6/V8 Complete Sterndrive Assembly

New OBR / Mercruiser 1969-1990 Alpha I 4-CYL/V6/V8 Complete Sterndrive AssemblyThis listing is for a New OBR Mercruiser Alpha I Complete Drive Shaft Assembly, which will fit models from 1969 to 1990 (Please note that Alpha I serial numbers are from OD494569 and before). New drive shaft assemblies are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. Bolt Kit Included. This item is available in the following Gear Ratios: 1. 50, 1. 65, 1. 84, and 1. 98.

By lifting the hull higher

Kevlar® core for maximum durability and long lifeDurable stainless steel wound conductor for maximum horsepower and engine performancePremium silicone jacketing and boots for the ultimate in high temperature protectionSuperior RFI suppression for the most sensitive electronic systemCorrosion resistant stainless steel spark plug and distributor terminals for maximum conductivityOE style boots provide a sealed barrier against heat

255 MIE (GM) 1975-1980

center rise 7‑degree exhaust elbows to dry joint exhaustmanifolds and elbows

and 30 inch Shafts

2L MPI engines with ECM 555 (s/n 0M300000 and up)

Aggressive pitch angles

Made for sport and performance - can be used with MerCruiser XR Drives

MerCruiser EXHAUST MANIFOLD by Sierra

35HP 1984 - 1989

you will need to use your old water coupling or purchase the correct part (SEI part number 96-116-12K)

1996 and newer Bravo and Vazer transom assemblies