McGard 74018 Marine Single Stern Drive Lock Set (7/16-20 Thread Size) - MerCruiser/OMC - Set of 1

In stock
Part Number
  • Thread Size: 7/16-20
  • Color: Yellow
  • Finish: Stainless Steel
  • Hex Size: 5/8
  • Overall Length: 0.750
  • Style: Stern Drive Locks
  • California Residents : WARNING: Cancer and Reproductive Harm:
  • Stern Drive Lock Installation Instructions
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NEED A WHEEL LOCK KEY? READ ME! Wheel Lock set key codes differ!! If you need a spare key, ordering a new wheel lock set will not match your existing wheel lock. For replacement keys or locks order online at or contact Customer Service at 1-800-444-5847, Monday – Friday 8am – 5pm EST

Product Description

The best protection available against expensive stern drive theft. Simply replace one of the stern drive mounting nuts with a McGard lock. These stern drive locks are fully machined from high quality stainless steel and are through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Fits the following single drives: Mercruiser Alpha, Bravo I-III (Incl. X and XR); Blackhawk; OMC Cobra and King Cobra; Volvo SX, DP-S. This product may contain globally sourced materials/components.

Installation Video