McGard Propeller Lock

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Product Description: Protect your boat’s propeller from theft with the McGard Boat Propeller Lock, a trusted security solution engineered with the same patented design used in McGa rd’s stern drive and outboard motor locks. This robust lock replaces your prop nut with a precision-crafted unit made from corrosion-resistant naval brass and hardened stainless steel, ensuring durability and long-lasting marine protection. The patented free-spinning collar actively thwarts gripping tools and tampering attempts, making unauthorized removal virtually impossible without the unique key. Designed for ease of use, simply install once and leave the lock on—no need to remove it before every boat outing, allowing hassle-free operation without compromising security. Compatible with a wide range of stern drives and outboard motors from leading manufacturers including Yamaha, Honda, Suzuki, and Johnson/Evinrude, this lock fits thread size M18x1.5, making it ideal for many popular marine engines. Crafted in the USA to meet or exceed OEM standards, the McGard Boat Propeller Lock offers boat owners peace of mind by securing a vital component of their vessel against theft, corrosion, and wear. Product Specifications: Material: Naval Brass and Hardened Stainless Steel Thread Size: M18x1.5 Compatibility: Sterndrives: All Yamaha stern drives Outboards: Honda 75 HP+, Suzuki 40 HP+, Yamaha 90 HP+, Johnson/Evinrude 150 HP+ (4 stroke; excludes 2014+ Evinrude E-Tec G2 200HP-300HP motors due to anode cone) Includes: 1 Lock, 1 Unique Key, Lock Cover Made in: USA to OEM specifications WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Show more