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McGard 74049 Marine Single Outboard Motor Lock Set (5/16-18 Thread Size) - Set of 1

Installation Video

McGard 74049 Marine Single Outboard Motor Lock Set (5/16-18 Thread Size) - Set of 1

Part No. 74049

  • Thread Size: 5/16-18
  • Hex Size: 5/8
  • Overall Length: 0.750
  • Style: Outboard Motor Locks
  • California Residents : WARNING: Cancer and Reproductive Harm:
  • Outboard Motor Lock Installation Instructions B View FileDownload


Key codes will not match if ordering more than one set online or if you’re ordering a lock set for replacement parts. For replacement parts contact Customer Service at 1-800-444-5847, Monday – Friday 8am – 5pm EST

Product Description

The best protection available against costly outboard motor theft. McGard outboard motor locks are designed to lock the bolt that holds the outboard onto the transom of the boat. Simply replace one of the mounting nuts with a McGard locking nut. These outboard motor locks are fully machined from high quality stainless steel and are through-hardened. A free-spinning collar turns if attacked by gripping tools. Fits most of the following outboard motors: Honda 8-30 hp, Johnson/Evinrude 6-30 hp, Mercury/Mariner 8-25 hp, Nissan 8-18 hp, Suzuki 8-30 hp, Tohatsu 8-18 hp, Yamaha 8-25 hp (lock may fit some 2 strokes up to 30 hp, verify hole diameter). *Will fit other small outboards with a 5/16 hole in the transom bracket for mounting the motor (stainless steel bolt included in set). This product may contain globally sourced materials/components.