Search Outdoor Answers

Looking for Answers about McGard McGard® Propeller Lock?

Camping(Q:1412 A:3467)
Clothing(Q:907 A:2675)
Fishing(Q:8044 A:30083)
Home & Gifts(Q:331 A:771)
Hunting(Q:3096 A:8147)
Outdoor Recreation(Q:608 A:1585)
Shoes & Boots(Q:632 A:2291)
Shooting(Q:2327 A:4971)
Shop now at
Choose a Category
Most Recent Questions
Recent Question:
Will this fit a 2014 Merc 60hp 4stroke? My 2014 175 Tracker is sluggish to plane.
Recent Question:
Will this work with a 82 Johnson 115 outboard.
Recent Question:
Will it fit on a Mariner 125HP 2 stroke?
Recent Question:
I need a prop for 1978 35h Johnson outboard. Will one of these work?
Questions with Most Recent Answers
Can this be used as a transom extension?
What do the "A"+"B"+"C" stand for? What demensions do they represent? I have an old 1973 Crestliner Voyager with cable steering on a Johnson 50 HP.
I need a prop for 1978 35h Johnson outboard. Will one of these work?
Will this fit my Merc 115 4 stroke?
See all Questions and Answers : Boating Q & A : Outboard Motor Accessories & Parts Q & A

Customer Questions & Answers for
McGard McGard® Propeller Lock

Anti-theft deviceNaval brass and hardened stainless steel constructionMaximum security for 24-hour protectionMcGard’s Prop Lock is a convenient anti-theft device that doesn't have to be removed before entering the water. Its free-spinning collar turns without loosening the lock when attacked by gripping tools. Constructed of naval brass and hardened stainless steel. Once installed, McGard’s prop lock offers maximum security for 24 hour protection. Model 74039 fits stern drives:MerCruiser: Alpha 1, Bravo 1 (Including X & XR), TRS OMC Cobra and King Cobra Model 74039 fits outboards: Mercury/Mariner 70 HP and larger (2 stroke)Mercury 50 HP and larger (4 stroke) (except 225 HP 4 stroke before 2005)Johnson/Evinrude 150 HP and larger (2 stroke) Model 74040 fits stern drives:  All Yamaha Model 74040 fits outboards:  Honda 75 HP and largerSuzuki 40 HP and largerYamaha 115 HP and largerJohnson/Evinrude 150 HP and larger (4 stroke)
Customer Questions & Answers:
1 Question
2 Answers
Overall Rating:
4.778 out of 5
out of
Product Details

Questions & Answers for McGard McGard® Propeller Lock


Are each keyed differently

If you have this lock, how is it protected from thieves? If they are the Pro's, could they have a key to fit the lock or are they totally keyed different to eliminate this problem?
asked 3 years, 8 months ago
 - joplin, mo
on McGard® Propeller Lock
2 answers
answer 1
looks like there are many different keys
answered 2 years, 7 months ago
 - Lake Barkley KY
answer 2
If thieves try to steal the prop, the stainless barrel of the lock/nut just spins, no matter how much they try to wrench on it. You have to have the McGard key and socket wrench to remove. You should keep your key with you not your boat. No worries about different keys.
Staff Answer
answered 2 years, 8 months ago
 - springfield, mo
1 of 1