Restore reliable shifting and maximum propulsion to your vessel with this Premium Aftermarket Replacement for OMC Cobra lower units. Engineered with a heavy-duty Dog Clutch mechanism that shifts directly in the lower, this SE109 unit delivers precise engagement and rugged durability for consistent marine performance.

  • General Cruising: Smooth shifting and dependable power transfer for recreational boating.

  • Direct Repower: The perfect, cost-effective solution for replacing worn or failing 1986-1993 sterndrive lowers.

  • Brand: SEI
  • Part Number: SE109
  • Cross-Reference/OEM: Premium Aftermarket Replacement for OMC Cobra
  • Engine Compatibility: V6 / V8 (Excludes 4-Cylinder with 4-1/4" Bullet)
  • Year Range: 1986–1993
  • Physical Specs: Dog Clutch (Shifts in Lower), Standard Rotation, 1-1/4" Propshaft
  • Fits 1986–1993 OMC Cobra Sterndrive lower units.
  • Designed exclusively for Standard Rotation applications.
  • Does NOT replace King Cobra or Joint Venture models.
  • Does NOT replace 4-cylinder units equipped with a 4-1/4" bullet diameter case.
  • Equipped with a 1-1/4" propshaft—you MUST purchase a new thrust washer for your propeller.
  • Always verify your exact Shaft Length and driveshaft Tooth/Spline Count prior to ordering to prevent incorrect fitment.

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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