logo
Worldwide Commitment
  • flag
  • flag
  • flag
  • flag
  • flag
  • flag
Click here: ID Card Registration & Replacement Keys
Current Employment Opportunities
Results
Menu
  • Automotive
    • Limited Time Only Lug Nuts!
    • McGard Apparel
    • Wheel Locks
      • Cone Seat
      • Shank Style
      • Bolt Style
      • Specialty Locks
      • Washers/Caps/Plugs
      • 5-Lock Sets for Exterior Spare Tires
    • Installation Kits
      • Installation Kits – Nuts
      • Installation Kits – Bolts
    • Lug Nuts/Lug Bolts
      • Lug Nut Comparison
      • Cone Seat
      • SplineDrive Lug Nuts
      • Shank Style
      • Drag Racing
      • Lug Bolts
    • Tailgate Lock
    • Jeep Door Lock
    • Heavy Duty Truck
    • Vehicle Application Guide
  • Marine
    • Stern Drive Locks
    • Outboard Motor Locks
    • Propeller Locks
    • Trailer Wheel Locks and Matching Lug Nuts
    • Yamaha Lower Unit Lock
  • Where To Buy
  • Replacement Keys
    • Order a Replacement Key or Lock Online!
    • Dealers Corner – Replacement Keys
    • FAQs
    • Automotive Replacement Information
    • Marine Replacement Parts
    • Warranty/Returns
    • Installation/Removal
  • Utilities / Telecom
    • Security Fasteners
    • Water Security Products
    • Electric Security Products
    • Natural Gas Security Products
    • Oil/Petroleum Security Products
    • Manhole Security Products
    • Sales Offices
    • Product Videos
    • SPD Information & Warranty
  • About McGard
    • Careers & Benefits
    • Human Resources
    • Company History
    • Worldwide Commitment
    • Manufacturing Capabilities
    • Quality Assurance
    • Contact Us
    • Environmental Stewardship
  • CAREERS
  • You are here:
  • Home
  • Marine
  • Stern Drive Locks

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.

» Watch Installation Video

 

 

Stern Drive Locks Applications
Photo Stern Drive Unit Thread Size Drive Part No. Details
  • MerCruiser® Alpha, Bravo I-III (Incl. X & XR)
  • Blackhawk
  • OMC Cobra & King Cobr
  • Volvo SX, DP-S
7/16″-20 Single 74018 View
  • MerCruiser® Alpha, Bravo I-III (Incl. X & XR)
  • Blackhawk
  • OMC Cobra & King Cobra
  • Volvo SX, DP-S
7/16″-20 *Twin 74019 View
  • MerCruiser® TRS & II SSM
1/2″-20 Single 74022 View
  • MerCruiser® TRS & II SSM
1/2″-20 *Twin 74023 View
  • Yamaha
M12 x 1.25 Single 74024 View
  • Yamaha
M12 x 1.25 *Twin 74025 View
  • MerCruiser® III SSM, IV SSM, V SSM, VI SSM, NX
5/8″-18 *Twin 74026 View
* Twin Drive sets include 2 locks and 1 key.

01

Original Equipment Factory Wheel

02

AFTERMARKET WHEELS

Marine

  • Stern Drive Locks
  • Outboard Motor Locks
  • Propeller Locks
  • Trailer Wheel Locks and Matching Lug Nuts

Part Search

Company Information

3875 California Road
Orchard Park, NY 14127-4198
Customer Service: 1-800-444-5847
Ph: 716-662-8980
Fx: 716-662-8985

USA

Connect with McGard

Facebook twitter youtube
Shop

Additional Resources

  • Careers & Benefits
  • Contact Us
  • Legal
  • Site map
  • California Transparency in Supply Chains Act
© Copyright 2026

Custom Development and Search Engine Optimization by Core101

Our website uses cookies and other technologies to help it function and give you the best user experience. For more information, see our Privacy Policy. By accessing or using our website, you agree to our updated Terms of Use Learn more