U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Packed and shipped within Canada!

Original & OEM Quality Parts

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Designed specifically for Yamaha lower units, this set features a stainless steel locking bolt. Simply replace one of the original bolts above the propeller with a McGard locking bolt. Once installed,... More Details

Simply replace one of the sterndrive mounting nuts for theft protection. Stainless steel with free-spinning collar that will turn if attacked by gripping tools. No assembly required. Fits Mercruiser®;... More Details

Simply replace one of the sterndrive mounting nuts for theft protection. Stainless steel with free-spinning collar that will turn if attacked by gripping tools. No assembly required. Fits Mercruiser®;... More Details

Designed to lock the outboard onto the transom, simply replace one of the mounting nuts with a McGard locking nut. A free spinning collar turns if attacked by gripping tools, protecting against theft ... More Details

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if at... More Details

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if at... More Details

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if at... More Details

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if at... More Details

Designed to lock the outboard onto the transom, simply replace one of the mounting nuts with a McGard locking nut. A free spinning collar turns if attacked by gripping tools, protecting against theft ... More Details

Designed to lock the outboard onto the transom, simply replace one of the mounting nuts with a McGard locking nut. A free spinning collar turns if attacked by gripping tools, protecting against theft ... More Details

Designed to lock the outboard onto the transom, simply replace one of the mounting nuts with a McGard locking nut. A free spinning collar turns if attacked by gripping tools, protecting against theft ... More Details

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if at... More Details

1/2-20 thread cone seat wheel locks and lug nuts. Guaranteed for life not to rust, chip or peel. Triple-nickel, chrome-plated steel.... More Details

1/2-20 thread cone seat wheel locks and lug nuts. Guaranteed for life not to rust, chip or peel. Triple-nickel, chrome-plated steel.... More Details

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Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of OEM and premium aftermarket marine and RV parts and accessories. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.