Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers
(835 reviews)
Price: $30.33
In Stock
Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers
Retail:$46.05
Our Price: $30.33
You Save: 34%
In Stock
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- All Info
- Reviews (835)
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- Used (1)
Master Lock Trailer Tongue Lock
- Fits 1-7/8 Inch Ball
- Fits 2 Inch Ball
- Fits 2-5/16 Inch Ball
- Keyed Unique
- Surround Lock
- Master Lock
- Universal Application Lock
Keep your trailer safe from towaway theft with this universal coupler lock. Its tough frame fits in and around most 1-7/8", 2", and 2-5/16" ball couplers; and it has a bright red color and heavy-duty construction to deter theft.
Features:
- Heavy-duty coupler lock deters trailer theft by preventing hookup
- Large size and heavy weight defend against attempts to break or shatter lock
- Wafer-tumbler lock mechanism resists picking and prying
- 1-Piece housing slides to fit tightly around your coupler
- Powder coat resists rust and corrosion
- Red color provides a visible theft deterrent
- 2 Keys included
Specs:
- Application: most 1-7/8", 2" and 2-5/16" couplers
- Fits standard lip, rolled lip, straight lip, surge brake, hammer blow, and UFP couplers
- Limited lifetime warranty
Note: This product cannot be keyed alike.
Instructions for Locking the Trailer Coupler
- Insert key and turn clockwise to unlock.
- Pull the ball out from the lock body as far as it will go.
- Insert the ball of the lock into your coupler's ball socket.
- Push the lock body in so that it surrounds your coupler.
- Turn key counterclockwise to lock.
389DAT Master Lock Universal Trailer Coupler Lock - 1-7/8", 2" and 2-5/16"
Item # ML389DAT
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Arrived Damaged
Customer Reviews
Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers - ML389DAT
Average Customer Rating: 4.8 out of 5 stars (835 Customer Reviews)
Keep your trailer safe from towaway theft with this universal coupler lock. Its tough frame fits in and around most 1-7/8", 2", and 2-5/16" ball couplers; and it has a bright red color and heavy-duty construction to deter theft.by: Venice03/29/2024
Very affordable deterrent that adds that little bit more security.
by: Erik A.05/13/2023
Great locks!! I feel a lot better leaving all three of my trailers at home with these locks on my trailers! Definitely recommend!
by: Li Zhang01/20/2019
It's a great product. It looks good on the trailer, and you can see it from very afar. And there is no way to saw it off, break it apart, or something like that. The construction is basically rounded, and there is nowhere you can find a starting point to place a saw or breakaway device on it. I have also bought different lock from Reese, and it looks wimpy, and easy to take it apart, or saw it off as some reviews have suggested. It's also easy to put it on and take it off. Just love the product. Here I attach some pictures in the campgrounds, etc.
by: George 02/09/2024
I have multiple trailers with different ball hitch sizes and Master Lock fits all of them well.
by: Alan03/19/2024
Doesn't fit securely. It seems like there are several ways to lock a trailer. Can't see how this one ever works well
by: Ben 03/22/2024
The items arrived and were in perfect condition. But the most impressive thing about eTrailer is the great service and expertise that they provide. The items I purchased could have been purchased locally, but I prefer to purchase all the items for my trailer and related objects from eTrailer due to their superior service and advice.
by: Douglas12/15/2019
Recently bought a boat and the trailer did not have any way to lock the tongue that I could see. After seeing that my stepson had a trailer with this style lock on it and seeing that it would be virtually impossible to pry it off I did some research. I have purchased from etrailer in the past and trust them to only sell the best. I ordered it and received it in a timely manner. It fits perfectly and I now feel my trailer and boat are secure. Who would doubt the Master Lock brand anyway!?!
Douglas
12/16/2020
Still working great, no complaints here.
by: Ed04/11/2024
It went on and off easy. Seems well built time will tell.
etrailer was great to work with and it got faster than expected.
by: Greg 03/18/2024
Fit my boat trailer perfectly
by: Eric08/28/2023
This is my second order from etrailers.com and the experience was rough due to the postal service on my first order but the staff was amazing at helping me work to find the shipment and even called my local post office. I was sold on this company and now my church uses them for all our trailer needs. They are extremely good at communications and updated me every step of the way including who worked with my package and even contacting me to ask if I wanted an alternative part that would have been here sooner. I love working with this company!
by: Smithsonite05/26/2022
Glad to see they went back to the original design. I have a chrome colored one I bought 13 years ago that is this style, still working. About 10 years ago I bought a 2nd one for my other trailer, and it was nothing like this one - cheap plastic everywhere, could easily be defeated. Backed into it once, and all the plastic broke off revealing just how flimsy it was. Was pleasantly surprised to see Master Lock went back to this much better design. I expect to get over 10 years out of this one.
Smithsonite
5/26/2023
Working great! No issues whatsoever. I keep the moving parts, including the key tumbler well lubed with white lithium grease, so this one is going to last.
by: Andrey07/17/2022
Doesn't fit on a 2 5/16 equipment trailer. Made for small, lawn-mower trailers.
Sierra K.
7/22/2022
I am sorry this coupler lock did not work for you. I think the hump on top of your coupler is the culprit. I think item # C48CR would fit better.
Helpful Links
by: Robert01/14/2018
I feel much better about parking my trailer on the street with this lock on the hitch. Not only does it lock up the hitch securely but the bright red color signals to prospective thieves that this trailer cannot be towed.
It is easy to attach and easy to remove. Also very compact so it can be stored easily. The shipping time was less than I expected. etrailer.com is my goto supplier for my trailer accessories.
by: Kim04/17/2024
It’s not exactly like we want. But for a lip roll tongue it fits. Wish they made the others for lip roll tongues instead of flat tongue…
by: Jimmy 11/06/2023
Universals lock, great for many applica tions
by: Tim 04/09/2024
Good strong product. Simple to use.
by: Larry Simon09/23/2016
I received the Master Lock Trailer Coupler Lock that I ordered. It was delivered in just a few days just a it was supposed to. It is exactly what I was looking for. It will help detour anyone from stealing my trailer ! I am extremely happy with the lock and etrailer ! I think this is a great company with great pricing on there products ! I will recommend them to everybody and will be ordering with them again real soon ! It was an easy and excellent experience. Great customer service too ! Thanks etrailer !
by: Mark B07/25/2023
Got this coupler lock for my boat trailer, easy to put on and take off.
So far it is working as expected, as do all the products I have purchased so far from etrailer.
by: Delmer05/02/2024
Great easy to use
by: Mark06/18/2023
Must be working... my trailer hasnt been stolen. I use every time in storage and at campgrounds. Easy to use.. Adjusts to fit snugly to coupler.. Doesnt bind up when installing or removing.. design much easier to use than some others.
by: brandon 08/25/2016
This is a terrific design since unlike padlocks, can't easily be cut with bolt cutters. I like the bright red color which tells a thief there is a lock to deal with from a distance. I think someone who wants your trailer can probably defeat any system you use, so the goal is to make it tough as possible and I think this lock does that.
by: Thomas M.07/06/2018
Works well I like the fact that it`s easy to connect, fits 1-7/8" ball up to 2-5/16" and protects my trailer peace of mind
by: Perry 04/18/2024
Went right on my hitch, Thank You
by: Michael11/19/2019
Nice tool, I like that it will adjust easily for different depths so it will fit more than one size trailer tongue. It pulls in snug and with a couple firm smacks with a 2 pound hammer is still works just fine.
by: Mike 06/17/2023
Part looks great right out of the package... I have a 2 5/16" Ball coupler and the lock works perfectly on it... I'm thinking the lock is not coming off of the trailer without the key... Couldn't be happier with the lock...
25
835
Show More Reviews
See what our Experts say about this Master Lock Trailer Tongue Lock
- Where to Find a Replacement Key and the Number for a Master Lock Trailer Coupler LockThe Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers, part # ML389DAT, would not have the key number printed on the package since they put random ones in each package (printing on the package would make it easier for others to find out your key number). As such, to determine the key number for use with # MLK1, you will need to look at the physical key itself as those are the only place where the number is printed. If you have completely lost your set of keys (and...
view full answer... - Coupler Lock Fit Standard Trailer CouplerWe have a heavy-duty coupler lock that will work for you, though the Atwood will not fit standard trailer couplers because the lock won't be able to clamp around the ball socket on a standard coupler. So instead, I recommend an option from Master Lock: - Master Lock Coupler Lock # ML389DAT
view full answer... - Coupler Lock for Vintage Coupler on 1949 AirstreamThank you so much for the photos and for your 2" coupler I recommend the Master Lock Trailer Coupler Lock # ML389DAT. This is a heavy-duty and easy to use coupler lock; you only need to put the ball of the lock into the coupler's ball socket, push the body of the lock in and turn the key. I have added links to a pair of video reviews for you to take a look at as well.
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- Availability of Keyed Alike Trailer Coupler LockUnfortunately, Master Lock doesn't give use the option of offering their # ML389DAT keyed alike. I'd recommend The Universal Trailer Coupler Lock, part # FA86-0015-318 which are keyed alike. This lock is offered under multiple part numbers that correspond to their key numbers. The last three digits of the part number is also the key number, the part # FA86-0015-318 comes with number 318 keys. If you want locks that have the same keys, you would order multiples of the same part number....
view full answer... - Keyed Alike Universal Coupler Lock I have an alternative for you with identical features but The Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers item # ML389DAT you referenced can not be keyed alike. I recommend the Fastway Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers - Key 316 item # FA86-0015-316.
view full answer... - Replacement Key for Master Lock ML389DAT Trailer Coupler LockTo obtain a replacement key, you'll need to know the 4 digit code that was stamped on the key. You'd use part # MLK1. On the product page, near the 'add to cart' button, you'd need to type in the 4 digit key number.
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- Titan Model 60 With Lockout for Drum BrakesTitan offers a bolt-on Model 60, # T43397007K with lockout # T4748800 for trailers with drum brakes. It works with trailers that have a 3" wide channel tongue and a 7,000 lb. weight capacity. I've attached a link to our article on trailer couplers as a courtesy. I also recommend purchasing a coupler lock like # ML389DAT to secure trailer and boat when not hitched to your vehicle.
view full answer... - Coupler Lock Recommendations for etrailer Adjustable Channel Mount Coupler # CTA-280You have some options to use a lock on coupler # CTA-280. First, you could use a latch lock, # e98883. Its diameter is slightly less (1/4 inches) than the pin hole diameter for the latch (5/16 inches). Another option is # ML389DAT which works with many styles of couplers and would be a great option for your coupler. I have linked videos of both locks for you.
view full answer... - Coupler Lock for 2-5/16" Trailer Coupler BallWe do not have any type of database of parts lists on each year, make and model of trailer so while we cannot tell you what type of coupler you have on your 2005 Airstream there are universal applications that should work. I recommend checking out the Master Lock Trailer Coupler Lock # ML389DAT which will work on your Airstream if you have a standard lip, rolled lip, straight lip, surge brake, hammer blow or UFP couplers. If you take a look at the accompanying photo you can see how this...
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- Coupler Lock for Titan Brake Actuator With 2-5/16 Hitch BallThere is a coupler lock for your Titan Brake Actuator # T2477600 with a 2-5/16" ball. The Master Lock # ML389DAT uses a 1-piece housing to fit securely around the coupler, has a powder coat to resist corrosion and comes with a pair of keys. I've added a photo showing how it looks on a Titan coupler and also linked a couple video reviews for you to take a look at.
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- Best Universal Trailer Coupler Lock with Keyed Alike OptionI do have trailer coupler locks that can be keyed alike no matter how many you purchase but the Master Lock Trailer Coupler Lock part # ML389DAT cannot. For a trailer coupler lock that fits 1-7/8", 2", and 2-5/16" hitch balls and can be keyed alike, I recommend the Fastway Universal Trailer Coupler Lock part # FA86-0015-318. The Fastway Universal Trailer Coupler Lock is a very versatile device which can fit three different size hitch balls. The tube style locking core makes keys harder...
view full answer... - Trailer Coupler Lock For Bulldog CouplerWhen using a bolt-on coupler such as the Bulldog # BD44150WH301, locks such as the Master Lock # ML389DAT help to prevent trailer theft. This product has a 1-Piece housing that slides to fit tightly around your coupler and 2 keys are included.
view full answer... - Recommended Coupler Lock for 2004 Layton Lite 170LT Travel TrailerIf the coupler on your 2004 Layton Lite 170LT travel trailer is 4-1/8-inches wide you'll want a coupler lock like # FA86-0015-316 that fits well on couplers up to 4-1/2-inches wide. A limited lifetime warranty protects this lock, which fits 1-7/8-, 2- and 2-5/16-inch couplers. 2 keys are included for the hard-to-pick tubular type lock.
view full answer... - Coupler Lock and Secuirty for Bolt-On A-Frame CouplerWhen using a bolt-on coupler such as the Demco # DM14793-52, trailer coupler locks such as the Master Lock # ML389DAT are added to prevent trailer theft. These locks are an inexpensive and large deterrent to those looking to steal a trailer. There is no absolute way to prevent theft of a coupler if somebody was determined enough, but it would be extraordinarily unusual for someone to go through the amount of time, trouble, and risk of unbolting a coupler for the purposes of taking the coupler...
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- Coupler Lock Recommendation that 6 of Can be Ordered Keyed AlikeI have a great solution for you, but there isn't a way to order the Master Lock coupler lock you mentioned keyed alike. Instead we have the Fastway Universal Coupler Lock # FA86-0015-315 which is the version of this lock that comes with the key number 315. If you ordered 6 of these they'd all have the same key. This is a superior lock designe as well. We've found it basically fits all coupler styles and is very effective. Check out the review video I attached for more info as well.
view full answer... - Recommendation For A 2 Inch Trailer Coupler Lock For A 2017 CM Dakota Two Horse TrailerBased on your information, your 2017 CM Dakota 2 Horse Trailer is bumper pulled. The Master Lock Trailer Coupler Lock, Item # ML389DAT, works with 1-7/8 inch, 2 inch, and 2-5/26 inch ball couplers. It fits most standard couplers and should fit your 2 inch Bulldog coupler. If this will not work for you, let me know and I will recommend other options.
view full answer... - Recommended Trailer Coupler Lock for a 2-5/16I want to start off by saying that any trailer lock that you purchase will never be able to fully secure your trailer from a thief. If they are determined enough to bring equipment with them to remove a lock then given enough time they will be able to remove a lock. This will be the case no matter what you what you are looking to put a lock on. With that being said, the Blaylock EZ Lock Trailer Coupler Lock # BLTL-33 that you referenced is a great lock that has received many great reviews...
view full answer... - Construction of Master Lock # ML389DAT Trailer Coupler LockThe Master Lock # ML389DAT is constructed of steel, as opposed to pot metal. Pot metal is an alloy made of non-ferrous metals with low melting points like zinc, lead, copper, tin and aluminum. The lock wouldn't shatter or crack if struck by a hammer, unless extraordinary means like liquid nitrogen were used on the lock first. Although just about any lock can be defeated by a determined criminal if they are motivated enough and have enough time, the rugged construction of the # ML389DAT...
view full answer... - Locks for A-Frame Trailer CouplerWe have all sort of trailer locks including coupler locks for a-frame trailer couplers. Please refer to the linked page that displays all standard coupler locks. You can use a universal-fit surround-type lock such as # ML389DAT which fits all ball sizes and that prevents someone from hitching to your trailer by clocking access to the coupler, or a simple latch type lock like # e98889 that prevents the coupler latch (like the one on # CA-5400-B) from being lifted to unlock the coupler.
view full answer... - BestTrailer Coupler Lock for R-Pod TrailerThe best trailer coupler lock for your 2015 R-Pod R178 - or other R-Pods with a 1-7/8", 2" or 2-5/16" ball coupler for that matter - is the Master Lock Trailer Coupler Lock # ML389DAT. The reason this is the best lock is because it offers the most protection from removal due to its unique design which ensures it won't be able to be pried off, cut off, or hammered off. It is also a bright red so any would-be thieves will know right away you have a trailer that isn't going to be worth their...
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- Recommended Replacement Coupler Lock for a CP Coupler LockReplacement keys from that manufacturer have not been available for some time so getting a replacement may prove to be a challenge. If it were me, I'd replace the entire situation with a newer one as you'd likely end up paying close to the same price for just a key. I recommend checking out the Master Lock Trailer Coupler Lock # ML389DAT. This coupler lock can be used on 1-7/8", 2" and 2-5/8" couplers, and uses a Wafer-Tumbler locking mechanism which is designed to resist picking and...
view full answer... - Recommended Coupler Lock that is Keyed AlikeI do have a solution for you, however the Master Lock Trailer Coupler Lock # ML389DAT referenced in your question cannot be keyed alike. For a similar option that is keyed alike, I recommend looking at the Fastway Universal Trailer Coupler Lock # FA86-0015-318. Like the Master Lock product you were looking at, this coupler lock is compatible with 1-7/8 inch, 2 inch, and 2-5/16 inch couplers. It features an anti-drill pin to discourage attempts to drill out the lock and a bolt-blocked...
view full answer... - Can the Master Lock Trailer Coupler Lock Be Re-Keyed Before it is Shipped?I really wish we could rekey these because we get the request all the time but we just can't do it. I have reached out to Master Lock on this subject before and they have told me you can take the Master Lock Trailer Coupler Lock item # ML389DAT to a lock smith and have it rekeyed yourself but they won't do it. If you are looking to purchase multiple coupler locks that can be opened with the same key I recommend the Fastway Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers - Key...
view full answer... - Recommended Trailer Coupler and Trigger LockIf the Fastway Universal Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers - Key 312, # FA86-0015-312, coupler is not snug, it may not be installed correctly. I've attached a video review for you to check out and make sure. If it is installed correctly and still doesn't meet your needs, then I recommend a different style of coupler lock like the Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers, # ML389DAT. You may also be interested in a trigger lock like the Master...
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Do you have a question about this Trailer Tongue Lock?
Used Items Available
Condition: Surface Scratches
Notes: Item has minor scuffs and chips on the paint and the packaging was damaged. Otherwise new and unused.
Info for this part was:
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Jenny N.
3/22/2024
I hate to hear that you are not happy with the coupler lock. Would you be able to send a picture or describe in more detail how it is not fitting for you.