Sierra products are engineered to meet today’s high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies m...

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Sierra products are engineered to meet today’s high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders hundreds of quality parts every day

  • Sierra Prop Nut Kit
  • Contains: 18-3726 Prop Nut, 18-3735 Cotter Pin, 18-4274 Prop Spacer
  • Sierra part number: 18-3782
  • Interchangeable with the following: GLM 21251, Mallory 9-73992, Yamaha 6G5-W4599-00-00
  • Sierra Prop Nut Kit
  • Contains: 18-3726 Prop Nut, 18-3735 Cotter Pin, 18-4274 Prop Spacer
  • Sierra part number: 18-3782
  • Interchangeable with the following: GLM 21251, Mallory 9-73992, Yamaha 6G5-W4599-00-00

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