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Sierra 18-3730 Lock Nut for OMC Cobra Stern Drives

Manufacturer

Picture for manufacturer Sierra

Part Number

118-3730
9 reviews
Sale Price

$4.52

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3730 is a high-quality replacement lock nut designed for OMC Cobra and King Cobra stern drives manufactured from 1987 to 1994. This precision-engineered fastener meets OEM specifications and provides reliable performance in marine stern drive applications.

Key Features:

  • Direct replacement for OMC and Volvo Penta stern drive lock nuts
  • Manufactured to meet or exceed original equipment standards
  • Designed for durability in marine environments
  • Quality construction for secure fastening

Replaces OEM Part Numbers:

  • OMC: 3852648, 3853329, 852648, 911835, 912920, 914772
  • Volvo Penta: 3852648, 3852648-9
  • Mercury: 11-34933, 11-859116

This lock nut is compatible with OMC SX Drives, Cobra, and King Cobra stern drive systems. Sierra Marine is recognized as a market leader in aftermarket marine engine parts, offering comprehensive coverage for every major engine brand.

Great!

None

Nice website and competitive prices

good prices and quick delivery

lot of searching

easy purchase process

Too many surveys

Easy to find everything

Very satisfied, had the plugs I needed

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