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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 DriveStern Drive

STERN DRIVE UNITTHREADDRIVEPART #
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.

per page

7 Item(s)

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

    Part No. 74018

    $45.48
    Product Link
  2. McGard 74019 Marine Twin Stern Drive Lock Set (7/16-20 Thread Size) - MerCruiser/OMC - Set of 2
    McGard 74019 Marine Twin Stern Drive Lock Set (7/16-20 Thread Size) - MerCruiser/OMC - Set of 2

    Part No. 74019

    $73.19
    Product Link
  3. McGard 74022 Marine Single Stern Drive Lock Set (1/2-20 Thread Size) - TRS - Set of 1
    McGard 74022 Marine Single Stern Drive Lock Set (1/2-20 Thread Size) - TRS - Set of 1

    Part No. 74022

    $51.89
    Product Link
  4. McGard 74023 Marine Twin Stern Drive Lock Set (1/2-20 Thread Size) - TRS - Set of 2
    McGard 74023 Marine Twin Stern Drive Lock Set (1/2-20 Thread Size) - TRS - Set of 2

    Part No. 74023

    $84.33
    Product Link
  5. McGard 74024 Marine Single Stern Drive Lock Set (M12x1.25 Thread Size) - Yamaha - Set of 1
    McGard 74024 Marine Single Stern Drive Lock Set (M12x1.25 Thread Size) - Yamaha - Set of 1

    Part No. 74024

    $51.89
    Product Link
  6. McGard 74025 Marine Twin Stern Drive Lock Set (M12x1.25 Thread Size) - Yamaha - Set of 2
    McGard 74025 Marine Twin Stern Drive Lock Set (M12x1.25 Thread Size) - Yamaha - Set of 2

    Part No. 74025

    $84.33
    Product Link
  7. McGard 74026 Marine Twin Stern Drive Lock Set (5/8-18 Thread Size) - Speedmaster - Set of 2
    McGard 74026 Marine Twin Stern Drive Lock Set (5/8-18 Thread Size) - Speedmaster - Set of 2

    Part No. 74026

    $123.65
    Product Link
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7 Item(s)

Set Descending Direction
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Shopping Options
Thread Size
  1. 1/2-20 2item
  2. 5/8-18 1 item
  3. 7/16-20 2item
  4. M12 x 1.25 2item
Choose your color and Style
  1. Yellow 1 item
Price
  1. $0.00 - $99.99 6item
  2. $100.00 and above 1 item
Hex Size
  1. 3/4 1 item
  2. 5/8 6item