4.2 5 10
McGard Single Propeller Lock, 3/4" x 16 thread
Item No. 314391
McGard Single Propeller Lock, 3/4" x 16 thread is rated 4.2 out of 5 by 10.
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McGard Single Propeller Lock, 3/4" x 16 thread
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McGard Single Propeller Lock, 3/4" x 16 thread

McGard Single Propeller Lock, 3/4" x 16 thread is rated 4.2 out of 5 by 10.
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Item No. 314391
$61.74 $64.99
Save $3.25 ( 5% Off )
Save 10% off $99+ or 15% off $99+ GSM See Details
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Additional Information
Innovative McGard propeller locks are designed with a free spinning collar that prevents tools from loosening the prop. Protect from theft during use and in storage. Fits Mercruiser Stern Drives: Alpha I, Bravo I, TRS; OMC Stern Drives: Cobra and King Cobra; Mercury, Mariner Outboards: 70 hp and larger; Johnson, Evinrude Outboards: 140 hp and larger, and Volvo SX :motors up to '99.
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  • Free-spinning collar
  • Prevents tools from loosening the prop
  • Protects from theft
  • Does not hinder prop operation
Unit Weight 0.55 lb
Brand McGard
WARNING: Cancer and Reproductive Harm For more information, go to www.P65Warnings.ca.gov/product.
Rated 5 out of 5 by from Prop lock for stored pontoon outboard Our new pontoon boat must be parked in our front yard so we decided to protect our stainless steel prop with a prop lock. This one seems secure enough and was very easy to install with just a prop wrench and the included key. Happy with the product and thieves will move on.
Date published: 2021-04-26
Rated 1 out of 5 by from McGard Propeller Lock not for Volvo-Penta SX I ordered the McGard lock per your catalog for my SX outdrive but when I received the package it specifically omitted the SX. I then contacted McGard directly who informed me that your catalog is incorrect and that they don't currently make a propeller lock for the Volvo SX outdrive.
Date published: 2016-02-11
Rated 5 out of 5 by from McGard prop lock After losing a new prop I found the McGard Prop Lock. Now I have peace of mind when my boat is out of my sight. EASY to install and looks good on the motor. Great Product
Date published: 2015-07-17
Rated 5 out of 5 by from Simple but effective Does what it is designed to do, Protect.
Date published: 2011-06-09
Rated 5 out of 5 by from GREAT PRODUCT I have had Mcguard prop locks in the past & would buy again...good for boats stored in remote areas where prop theft has been a random problem.
Date published: 2010-07-06
Rated 5 out of 5 by from Keep your Prop! After having my prop stolen right off my lower unit in my driveway, I found this Locking Prop Nut to be an easy to use valuable investment. And, you can leave it on while use in the water.
Date published: 2009-09-01
Rated 5 out of 5 by from Now my stainless prop is protected Easy to Install. Will not corrode. Gives peace of mind knowing your prop is not up for grabs.
Date published: 2009-05-12
Rated 5 out of 5 by from Love this product This product keeps me from worrying about theft. It is easy to use.
Date published: 2009-04-29
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Is there a prop lock made for a 2002 Volvo penta sx drive? If so, what make & part number? Thanks

Asked by: John
After thinking about how many thousands & thousands of boats that are built with Volvo penta sx drives, I did some further research. Turns out that my prop shaft was indeed 3/4"-16 thread., And Yes it does fit. Too bad you lost a sale.
Answered by: John
Date published: 2017-08-25

Will this fit a 2002 Volvo penta sx drive single prop? Thanks

Asked by: John
Unfortunately this Propeller Lock is for SX models up to 1999.
Answered by: Amanda
Date published: 2017-08-18

I lost my prop lock keys. How can I match them up and replace them

Asked by: Jim sprott
We recommend contacting McGard directly at 1-800-444-5847.
Answered by: Amanda
Date published: 2017-08-16

Will it work on a Suzuki DF250SS 

Asked by: Bill
No. This McGard Single Propeller Lock will not work with your application. You will need the McGard part number 74036, which we currently do not offer.
Answered by: Steve
Date published: 2017-04-03

Is this removable once installed?

Asked by: Kuips
Yes. This can be removed using the special tool that is included. It works just like lug nuts on your vehicle's rims if you are familiar with such a locking system that using a unique key.
Answered by: Product Expert
Date published: 2015-09-23

will this fit 150 hp Mercury out board 4 stroke 2006 year model

Asked by: Phil
Yes...this fits Mercruiser Stern Drives: Alpha I, Bravo I, TRS; Mercury, Mariner Outboards: 70 hp and larger;
Answered by: Justin
Date published: 2015-09-23
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