4.6364 5 11
Trimax Universal Unattended Coupler Lock
Item No. 315788
Trimax Universal Unattended Coupler Lock is rated 4.6 out of 5 by 11.
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Trimax Universal Unattended Coupler Lock

Trimax Universal Unattended Coupler Lock is rated 4.6 out of 5 by 11.
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Item No. 315788
$34.23 $39.99
Save $5.76 ( 14% Off )
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Additional Information
This die-cast dual purpose lock fits all couplers. Simply slide ball up into coupler and lock the U-shackle in place. Key hole cover seals out dirt. Comes with two 6-tooth keys.
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  • Fits all couplers
  • Includes two 6-tooth keys
Unit Weight 3.40 lb
Brand Trimax
WARNING: Cancer and Reproductive Harm For more information, go to www.P65Warnings.ca.gov/product.
Rated 5 out of 5 by from Happy customer The trailer lock is perfect to meet our need! We had a boat trailer stolen once before. With this lock, our trailer cannot be stolen! Gives us a sense of relief!
Date published: 2015-06-26
Rated 5 out of 5 by from I Have a Couple-r Trimax Couplers Bought 2 Trimax Couplers, for my boat-trailer and utility trailer and installation was pretty quick and easy.
Date published: 2012-11-08
Rated 5 out of 5 by from Trailer Hitch Lock The Trimax Universal Coupler Lock by Trimax is for added security while boat and trailer are parked.
Date published: 2012-08-20
Rated 5 out of 5 by from very good lock . i'm very happy with it has a strong lock . keeps out all of bad weather,and helps keep out rust out of ball joint.
Date published: 2011-10-12
Rated 5 out of 5 by from A high quality hitch lock. One of the very best hitch locks I have seen. The ease of installation, and functionality make this lock a must have when leaving your trailer unattended. High quality and extremely durable. I highly recommend this lock.
Date published: 2012-07-10
Rated 5 out of 5 by from Easy to put on and VERY Sturdy! So easy to put on and is VERY sturdy and heavy enough for any thieves to not try to get through this lock!! LOVE IT! I also feel much safer that my trailer will not get stolen
Date published: 2021-04-29
Rated 1 out of 5 by from Should of found a better lock! I wish I would of got a proven industries lock! Check out this one provenlocks.com this is by far the best one out there!!!
Date published: 2015-11-10
Rated 5 out of 5 by from Great security product! This is the 2nd one of these I have purchased. The coupler lock does a great job securing the trailer from possible theft.
Date published: 2015-04-13
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What size ball does this item come with? I have an 1 -7/8 ball on my hitch

Asked by: John
This is a universal coupler lock and fits all size couplers including your 1 7/8". Your coupler does not have to latch tight on the lock ball. The ball and the part that goes over the top of the coupler keeps the lock secure on the coupler.
Answered by: Product Expert
Date published: 2017-03-25
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