Sierra 118-3701 Prop Nut Kit for Mercury/Mariner Outboards and MerCruiser Drives

The Sierra 118-3701 Propeller Nut Kit is a premium aftermarket replacement designed for Mercury and Mariner outboard motors 75 HP and higher (excluding 225 EFI 4-Stroke models), as well as MerCruiser Alpha One and Bravo stern drives. This essential hardware kit ensures secure propeller retention and prevents prop loss during operation.

What's Included:

• One propeller retaining nut (Sierra 18-3700)
• Two locking tab washers (Sierra 18-3200)
• Spacer components for proper installation

Key Features:

• Manufactured from alloy steel with machined finish and zinc plating for corrosion resistance
• Engineered to meet or exceed OEM specifications
• Direct replacement for Mercury/MerCruiser part numbers 11-52707A1, 11-52707Q1, and 11-52707T1
• Also replaces Chrysler/Force 11-52707A1, Mallory 9-73960, and GLM 21250

Sierra is a trusted brand in the marine aftermarket industry, providing premium-quality replacement parts for outboard and stern drive applications. This prop nut kit is an essential spare part to keep onboard for routine maintenance or emergency repairs.