We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Stainless steel propeller lock with free-spinning collar, model 716055

MCGARD

MCGARD Propeller Locks 716055

SKU CH-1Z70-AWF9P

Stainless steel propeller lock with a free-spinning collar that resists gripping tools during use, storage and transit

  • MaterialStainless steel
  • Theft deterrent for propeller during use, storage and transit
  • Free-spinning collar resists gripping tools without loosening the lock
  • Naval brass and hardened stainless steel construction for maximum security
  • Nut unlocking system provides simple key-free operation
  • Motor lock type designed specifically for marine engine parts

Marine Propeller Security

MCGARD Propeller Locks secure outboard and sterndrive propellers against theft while the boat is in use, stored or transported. The lock replaces the standard propeller nut and uses a unique key pattern that cannot be duplicated without the registered code. Naval brass and hardened stainless steel construction resists corrosion in saltwater environments.

Sustained Exposure Durability

The free-spinning collar defeats gripping tools by rotating under attack force without transferring torque to the locking mechanism. Hardened stainless steel maintains structural integrity after repeated impact or prying attempts. Materials are selected for long-term immersion so the lock remains removable with the correct key after seasons underwater.

Replaces Standard Prop Nut

This lock directly substitutes the factory propeller nut on compatible shafts, adding theft protection without altering propeller fit or performance. The upgrade is worthwhile when the vessel is moored in accessible waters, stored on a trailer or transported on public roads where propeller theft is a known risk. Boats kept exclusively in secured, monitored marinas may not need the additional layer.

Highlights

  • Theft deterrent for propeller during use, storage and transit
  • Free-spinning collar resists gripping tools without loosening the lock
  • Naval brass and hardened stainless steel construction for maximum security
  • Nut unlocking system provides simple key-free operation
  • Motor lock type designed specifically for marine engine parts

Specifications

BrandMCGARD
ModelPropeller Locks
MaterialStainless steel

Questions about this item

How much heat or noise do the 716055 propeller locks generate when the engine runs all day?

They are passive stainless-steel and naval-brass components with no moving parts, so they produce no heat and no noise during continuous operation.

What must I already own for the 716055 propeller locks to secure my motor?

You need a compatible propeller nut on your outboard or sterndrive; the lock replaces or covers that nut and uses its own keyed collar.

Will the 716055 propeller locks fit older outboards that use a standard propeller nut thread?

The lock is designed around a nut-based unlocking system, so it fits any motor where the existing propeller nut matches the lock’s thread pattern.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.