Restore your vessel's propulsion efficiency with this Complete Sterndrive Assembly, a premium aftermarket replacement for Alpha One Gen I style drives. Engineered with a 1.62 gear ratio, this unit is optimized for 160HP to 165HP engine configurations, providing smooth power transmission and reliable torque. The assembly features an 8-1/8" Old Style Short Input Yoke and is housed in a heavy-duty casing designed to withstand the rigors of both freshwater and saltwater environments.

Ideal Applications

  • Restoration of Vintage 160/165HP Vessels

  • Freshwater Fishing and Utility Boats

  • Coastal Recreational Cruising

  • Brand: SEI
  • Part Number: GEN-I-1_62-COMPLETE-SHORT-YOKE
  • OEM / Cross-Reference: SE104, 90-104-02
  • Engine Compatibility: Alpha One Gen I (160/165HP Models)
  • Year Range: 1967–1977
  • Gear Ratio: 1.62:1
  • Input Yoke: 8-1/8" (Short Style)
  • Rotation: Standard (Right Hand)
  • Horsepower Rating: Up to 300HP
  • Drive Type: Complete Sterndrive (Upper & Lower)
  • Replaces Alpha One Gen I style drives (R/MR models)
  • Specifically fits 160HP (1967–1969) and 165HP (1970–1977) models
  • Equipped with a 1.62 Gear Ratio
  • Designed for systems with Trim and Tilt functionality
  • Verify Yoke Length: Includes the 8-1/8" Short Yoke; ensure this matches your existing input shaft.
  • Kit Exclusions: Does not include the Complete Installation Kit or Anode Kit (must be purchased separately).
  • Horsepower Limit: Engineered for applications up to 300HP; not recommended for high-performance racing builds.

Mariners Warehouse vs Others

Built to match OEM standards while delivering reliable performance and peace of mind.

Features

Mariners Warehouse

Others

Performance ✔️
Warranty Support Reliable warranty Limited or unclear warranty terms
Customer Trust Trusted by thousands of marine customers Unverified buyer trust
Pre-tested before shipping for reliability ✔️
OEM performance standards ✔️
Simple return process ✔️

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