Protect yourself against expensive propeller theft with a McGard propeller lock, featuring the same patented design as our stern drive and outboard motor locks. A free-spinning collar will turn if attacked by gripping tools without loosening the lock. Constructed of naval brass and hardened stainless steel, once installed our propeller lock offers maximum security for 24 hour protection.
Part #74039 designed for use with sterndrives:
- Mercury/Mariner 70 HP and larger (ex.225 HP 4 stroke before 2005)
- Mercury Bigfoot 40 HP, 50 HP, 60 HP (4 stroke)
- Optimax 75 HP and larger
- Verado 135 HP and larger
- Johnson/Evinrude 150 HP and larger (2 stroke)
Thread: 3/4 - 16
Is this 74039 the right lock for Mercruiser Alpha One?
Yes this works with the Mercruiser Alpha One.
Will this lock fit a volvo penta SX single prop outdrive 1999 model 5.7litre engine?
According to McGard, they do not have one for the SX outdrive.
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies