Stern Drive Locks
Simply replace one of the stern drive mounting nuts with a McGard lock. Stern drive locks are fully machined from high quality stainless steel and through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Give yourself the best protection available against stern drive theft. Ask for McGard Marine Locks by name.


| STERN DRIVE UNIT | THREAD | DRIVE | PART # |
|---|---|---|---|
| MerCruiser® Alpha, Bravo I-III (Incl. X & XR), Blackhawk OMC Cobra & King Cobra Volvo SX, DP-S |
7/16 - 20 7/16 - 20 |
Single *Twin |
74018 » 74019 » |
| MerCruiser® TRS & II SSM | 1/2 - 20 1/2 - 20 |
Single *Twin |
74022 » 74023 » |
| Yamaha | M12 x 1.25 M12 x 1.25 |
Single *Twin |
74024 » 74025 » |
| MerCruiser® III SSM, IV SSM, V SSM, VI SSM, NXT |
5/8 - 18 | *Twin | 74026 » |
| *Twin Drive sets include 2 locks and 1 key. | |||
McGard is not responsible for changes to thread sizes by the manufacturer. Verify the correct thread size and application before installing locks.





