McGard offers the most complete Marine Security Fastener Program in the industry. For over 25 years we have been the leading manufacturer of automotive wheel locks and lug nuts. This same expertise is reflected in our marine products and programs. McGard's state-of-the-art design, engineering and manufacturing enable us to produce the highest quality products for the best possible price. That combined with our contemporary packaging and factory-direct customer service makes us the obvious choice for you - and your customers. You won't find a better value anywhere. Whether it's theft protection for stern drives, outboard motors, propellers or trailer wheels, McGard has it.

Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives.

Simply replace one of the stern drive mounting nuts or Volvo bolt with a McGuard lock. Our stern drive locks are fully machined from high quality stainless steel and through-hardened. This new design features a free spinning collar that turns if attacked by gripping tools without loosening the lock. Give customers the best protection available against expensive stern drive theft.

Safety / Security: Locks-SD
SDL-74018
302-740180

Stem Drive Locks: (Clamshell):Single Drive: MercCruser Alpha and Bravo I-III, Blackhawk; OMC, Cobra & King Cobra, Volvo SX, DP-S
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74019
302-740190

Stem Drive Locks: (Clamshell):Twin Drive: MercCruiser Alpha and Bravo, Blackhawk; OMC, Cobra & King Cobra, Volvo SX, DP-S
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74020c
302-740200

Stem Drive Locks: Single Drive: MercCruser Alpha and Bravo I-III, Blackhawk; OMC, Cobra & King Cobra, Volvo SX, DP-S
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74021c
302-740210

Stem Drive Locks Twin Drive: MercCruser Alpha and Bravo, Blackhawk; OMC, Cobra
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74022
302-740220

Stem Drive Locks: (Clamshell):Single Drive: MerCruise TRS & SSM 1/2" Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74023
302-740310

Stem Drive Locks: (Clamshell):Twin Drive: MerCruise TRS & SSM 1/2" Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74024
302-740320

Stem Drive Locks: (Clamshell):Single Drive: Yamaha M12x1.25 Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74025
302-740330

Stem Drive Locks: (Clamshell) Twin Drive: Yamaha M12x1.25 Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74026
302-740340

Stem Drive Locks: Twin Drive : MercCruiser III SSM; IV SSM, V SSM, VI SSM
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74030c
302-740300

Stem Drive Locks: Single Drive: MerCruise TRS & SSM 1/2" Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74031c
302-740310

Stem Drive Locks: Twin Drive: MerCruise TRS & SSM 1/2" Thread
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74032c
302-740320

Stem Drive Locks: Single Drive: Yamaha
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74033c
302-740330

Stem Drive Locks: Twin Drive: Yamaha
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74034c
302-740340

Stem Drive Locks (Clamshell): Twin Drive : MercCruser III SSM; IV SSM, V SSM, VI SSM
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.

Safety / Security: Locks-SD
SDL-74047

Stem Drive Locks: Volvo, (except SK , DPX)
Theft Protection for Mercruiser, Cobra, Yamaha or Volvo Stern Drives PLEASE CALL BEFORE PLACING YOUR ORDER FOR CORRECT LOCK.