Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches
(77 reviews)
Price: $69.66
In Stock
Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches
Item # 3794DAT
Retail:$85.06
Our Price: $69.66
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In Stock
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- All Info
- Reviews (77)
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Master Lock Trailer Hitch Lock - 3794DAT
- Fits 1-1/4 and 2 Inch Hitch
- Fits 1-1/4 Inch Hitch
- Fits 2 Inch Hitch
- Standard Pin Lock
- Keyed Unique
- Master Lock
- 2 Inch Span
- Bent Pin
Kit includes a universal coupler lock to prevent towaway theft; an adjustable latch lock to ensure that your trailer won't be unhooked from the coupler; and a trailer hitch receiver lock that fits 1-1/4" and 2" hitches.
Features:
- Towing kit includes 3 locks for ultimate security
- Universal-fit coupler lock deters trailer theft by fitting over the coupler, preventing hookup
- Designed for use when trailer is not in tow
- Constructed with a laminated, riveted steel frame for strength and durability
- Center section that fits inside coupler is finned steel - will not warp or bend
- Coupler latch lock keeps others from releasing your trailer once it is hooked up
- Stainless steel construction is durable and rustproof
- Adjustable lock with 6 locking positions fits:
- 5/8" Latch width - most standard couplers
- 1" Latch width - most 2-5/16" ball couplers
- 2" Latch width - most wide-latch ball couplers
- Trailer hitch receiver lock is used in place of standard pin and clip to prevent theft of ball mount or accessories such as cargo carriers and bike racks
- Patented, stainless steel swivel head rotates 360 degrees for easy access
- Brass keyway with aluminum casing conveniently faces toward you, not off to the side
- Included pins will work with both 1-1/4" and 2" hitch receivers
- Chrome-plated steel is durable and corrosion resistant
- Patented, stainless steel swivel head rotates 360 degrees for easy access
- All locks have integrated keyhole covers to keep out dirt and moisture
- 3 Keyed-alike keys and convenient storage bag included
Specs:
- Coupler lock fits most 1-7/8", 2" and 2-5/16" ball couplers including:
- Straight lip, rolled lip and surge brake/hydraulic couplers
- Reese, Fulton, Valley, Atwood, Shelby, Putnam, Bulldog, Dutton-Lainson and UFP couplers
- Pin diameter of coupler latch lock: 1/4"
- Pin diameter of receiver lock: 1/2" and 5/8"
- Inside pin length of receiver lock (span): 2-3/4"
- Limited lifetime warranty
Replaces 3774DAT
3794DAT Master Lock Coupler Lock, Swivel Head Receiver Lock and Coupler Latch Lock
Installation Details
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- etrailer mistake
Customer Reviews
Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches - 3794DAT
Average Customer Rating: 4.7 out of 5 stars (77 Customer Reviews)
Kit includes a universal coupler lock to prevent towaway theft; an adjustable latch lock to ensure that your trailer won't be unhooked from the coupler; and a trailer hitch receiver lock that fits 1-1/4" and 2" hitches.by: Timmy04/15/2019
Master locks are a name brand. It is so nice to have all locks keyed the same. This decreases the chance the camper will get stolen.
by: Toby06/11/2013
Ample room for the bits in the bag, which is nice. I used some of the shipping bubble wrap to pad it. Everything looks nice, works properly, and I've already installed the two trailer locks on my trailer. Decent theft deterrent, will at least slow 'em down or walk if they're lazy.
Toby
7/3/2014
Ive had this for a year now and its worked flawlessly. Granted, it is used on our trailer that is stored indoors. The locking mechanisms and key tumblers are still smooth. The bits have been exposed to rain and sun and still look
by: D. Nguyen12/10/2020
Great product. All the locks work fine with my trailer and hitch. I feel more secure now leaving my boat park on the driveway. I was skeptical that it wouldn’t work with the square tongue but it fits really well and sturdy.
by: James03/23/2018
I've had this now for about a year, and it works very well. I like the fact that it all fits in the included case, and that all of the locking mechanisms are the same. I only have to carry one key for everything. I do think the lock for the coupler could be better, but overall I am very happy with these locks.
James
3/24/2019
I have been using this periodically since I purchased it, and it is still working great. I did lose one of the pins, so I might be purchasing a new one in the near future, but it isnt because the product isnt working as it is suppose to work, its because I cant find one of the pins.
by: Tracy10/26/2023
great product to keep everything secure until i lost the tiny little keys .I had to unfortunately cut everything off. products were definitely difficult and time consuming to cut with a cutoff blade. speaks well of the construction.
by: Mel 06/20/2023
This a great kit, with everything you need to make sure your Trailer is safe.
by: James01/23/2020
This is my second purchase of this kit. I have used the products to secure a small cargo trailer I haul behind my motorcycle. The locks are easy to install and provide added security. I have never been disappointed with any prodducts purchased at etrailer.com. Customer service has been excelent. I would recommend this product to anyone.
James
1/24/2021
I am still happy with the performance of this item and recommend it to anyone.
by: Larry12/04/2021
Being that it is a master lock set I would have expected better quality. The hitch part is riveted together and has a plastic cover on it. It looks very flimsy and cheap. The locks are very cheap and I am sure a big hammer would knock it right off, The lock that goes to the hitch with the long pin could be knocked out of place with a big hammer. The truck hitch pin is ok and is under the truck. Still a cheap lock.
Jenny N.
12/6/2021
I will have our customer service team reach out to you. I can say that the locks are a theft deterrent and I can not say that there are any lock systems out there that will 100 percent not come off. It really comes down to how good the thief is and how hard he is willing to work for it. I checked and I do not have another lock set that provides as many locks that this one does.
by: Brad04/12/2019
Nice to have a set of locking devices in one case all keyed the same.
HOWEVER, Not well designed & typical Chinese poor quality.
The coupling lock doesn't fit tight , its sloppy and loose. There is a short video of this same coupling lock being knocked off a trailer with one blow from a hammer.
The hitch shank pin has the locking cap perpendicular to the pin. With my tow vehicle I need to get on the ground to see and insert the key. Better to have the key hole in line with the pin and insert the key horizontal so the key hole slot is visible.
I wouldn't recommend this lock set.
by: Michael 08/30/2023
Just what I was Looking for.
by: Philip08/01/2022
Probably not the best product available, but it provides a decent layer of protection for the money. I’m got it to make sure my utility trailer doesn’t walk away. My only complaint is that my trailer tongue was powder coated and the lock for when it isn’t connected to a tow vehicle scratched up the powder coating quite a bit.
by: Christian K. 06/17/2017
Great product, the bag is not as cheap as you'd think. Hitch lock fits my camper hitch perfect. These are better than the Reese/Curt ones.
Christian K.
6/17/2018
After a year, bought a new trailer, same style hitch, but shaped different...doesn’t fit
Rachael H.
6/18/2018
This Master Lock trailer coupler does fit a wide variety of coupler sizes, profiles, and brands. I have included a link to our current offerings of trailer couplers if you would like to consider a different option.
Helpful Links
by: Dan 10/04/2020
Perhaps not the heaviest stuff available, but Masterlock gets it done and one key for all three devices is awesome. This will do the job very well.
by: Rus06/01/2016
Just took on it's first camping trip and so far everything is great. Seems like sturdy construction and having 1 key for everything is AWESOME. Caps over lock are nice for keeping dirt and water out. One bonus is the hitch lock creates a sort of "shin protector" for that time in the dark when you walk into your hitch. Another buddy is ordering his set this week.
by: Dave N02/16/2017
Recently purchased a boat and need to park my boat on trailer at a storage lot due to HOA restrictions. The Master Lock set secures all components of the trailer and hitch lock. Operation is smooth and all locks protected from weather. Recommend.
by: Paul 09/17/2018
I just made a significant purchase from etrailer to fit out my SUV and a new trailer to haul my Teryx UTV. Because they specialize in "everything trailers", I found their selection of options to be one of the most extensive on line ...and the pricing is very competitive too. The only place I found a full set of trailer/hitch locks with common keying was on this site. The set looks well made as I'd expect from Master Lock.
Packaging was excellent , delivery was fast and I will order from them again. Not a giant web sales enterprise so very good customer service follow-up... and a phone number that a real person answers! Imagine that :)
by: Ron T08/09/2017
Amazing product and the highest quality on everything I ordered - Draw-Tite Hitch Receiver, Harness, and Lock and Coupler Set for my 2016 Chevy Traverse. The video online made it so easy to install. Also, the wire harness instructions on where to install fuses and replays was so easy! If I need any trailer needs in the future I’m definitely ordering only from etrailer. Thank you etrailer Team!!
by: Peter K07/26/2012
Disappointed....
I wanted a set of 3 trailer locks and because the website has so many to choose from, I called etrailer for advice. I explained that I wanted top quality locks to secure an Airstream and that nothing short of the sturdiest would do. I was pointed at this Master Lock set and told it was well-regarded by buyers. So I took it. When it arrived I could see straight away how flimsy most of it is. Only the receiver lock appears to be anywhere near robust.
I wouldn't buy this again - individual locks are a better way to go.
by: Diane K06/21/2017
We feel like we've done everything we can to keep our trailer from being stolen. This lock set works great right out of the box (bag). Plus having the brand name of MasterLock gives us the added assurance that it will last more than one season. The directions were easy to understand and follow.
by: Jeff R.06/12/2013
This seems to be exactly what they say. It works, I feel better knowing my trailer is not going to be taken easily !! A drop of oil in the key hole will help keep moisture out and the keys work better.
Jeff R.
5/29/2014
Still happy with this product.
by: Michael D04/25/2018
Product works exactly as stated. Easy to use and higher quality than I expected. etrailer.com has been excellent through every step of the process instilling confidence in that if there was a problem I know they'd handle it. etrailer.com definitely deserves consideration when there's a choice between them and others. etrailer.com earns it!
by: Sparky03/21/2018
This lock is easy to apply and remove. All locks are keyed alike for convenience. Works well for me on a small trailer with a two inch ball connector.
by: Duke04/28/2018
The harness for my Pathfinder and Master lock kit were exactly as advertised. Good equipment at a reasonable price, not cheap junk. Will but from etrailer again. Thanks.
by: Gary06/08/2017
Items arrived quickly and as described. I feel very secure knowing that my trailer and hitch are safe from theives!
by: Cynthia01/15/2013
All five products ordered are great! They are just what we where hoping for. The Aluminum Ball Mount you had to back order was worth the wait, and shipped to us as soon as you recieved it. You kept in contact with us and well informed us of what was going on with the order, thanks and we will probably use you again. We are on our way to pickup our new trailer now with all the equitment we just recieved from you for towing. Thanks Cindy
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See what our Experts say about this Master Lock Trailer Hitch Lock
- How To Obtain Trailer Coupler and Hitch Pin Locks with Same KeyIf you're looking for a keyed alike surround coupler, coupler pin, and hitch pin lock we have a great option for you, the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set part # 3794DAT which comes keyed alike meaning the same key can be used for all included locks. It also comes with a handy storage bag for safe keeping while not in use. There's a total of four locks; one for the two for the coupler (one pin and one surround) and two for the hitch (1-1/4" and 2"). Unfortunately,...
view full answer... - Is There a Three Lock Set for 2" Trailer CouplersI have an excellent option for you which includes a hitch pin lock for the trailer hitch (1-1/4" and 2"), a pin lock for the coupler, and a wraparound lock for the coupler (1-7/8", 2", and 2-5/16"). This lock set will all use the same key for locking and unlocking so there will be no need to carry around three different keys. It also has a lifetime warranty. It's the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set part # 3794DAT.
view full answer... - Can Multiple Sets of Master Lock Trailer Hitch Lock Set be Keyed AlikeThere is not an option to get two sets of the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT all keyed alike but ordering two sets of these still gets you a total of six locks - two universal coupler locks, two trailer hitch receiver locks and two coupler latch locks - that can be unlocked with just two keys. So all you really need to do is put some masking tape on the locks and keys with an identifying mark (like putting "1" on a set of locks and keys and "2" on...
view full answer... - Can 2 Master Lock Trailer Hitch Lock Sets # 3794DAT be Keyed Alike to Each Other The Master Lock Trailer Hitch Receiver Lock and Coupler Set # 3794DAT referenced in your question cannot be keyed alike with another set but it will still be the best solution we have available for your two hitch receivers and couplers. This will allow you to use just a single key for each trailer lock setup. What I recommend doing is simply putting a small piece of tape on the lock and key and write an identifier on it (such as "1" and "2") so you can quickly remember which key is used...
view full answer... - Recommended Locks for Travel Trailer Coupler and Trailer Hitch ReceiverFor a lock set with matching keys that will allow you to secure the 2" receiver at the back as well as the trailer coupler I recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT. This comes with a universal coupler lock, an adjustable coupler latch lock, and a trailer hitch receiver lock that fits 1-1/4" and 2" hitches. This lock set will keep your trailer secure and prevent anyone from hooking up to your trailer. It also comes with 3 keyed alike keys and...
view full answer... - What Hitch Ball Sizes Can Be Secured With Coupler Lock in Master Lock Set # 3794DATThe Master Lock Trailer Hitch Receiver and Coupler Lock Set, part # 3794DAT, includes three locks, one for the coupler, one for the coupler latch and one for the receiver. The coupler lock does fit three sizes of hitch ball: 1-7/8, 2 and most 2-5/16-inch balls. I confirmed this with Master Lock. The receiver lock will fit both 1-1/4- and 2-inch hitch receivers. All three locks come keyed-alike for convenience and this Master Lock product carries a limited lifetime warranty.
view full answer... - Availability of Coupler Lock, Ball Mount Lock, and Pin Lock that are Keyed AlikeThe Masterlock trailer lock set part # 3794DAT does come with a ball mount lock, a pin lock, and a coupler lock that are all keyed alike like you are looking for.
view full answer... - Keyed Alike Hitch and Coupler Lock Set RecommendationWhat you would want is the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT that comes with two kinds of coupler locks and two sizes of hitch pin locks that are all keyed alike. I attached a review video for you to check out as well.
view full answer... - Recommended Trailer Locks for Rented U-Haul Trailers to Secure When Connected and DisconnectedSince you are looking to lock your trailer when connected as well as when disconnected, I recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches # 3794DAT. This kit will give you a hitch pin lock for your ball mount, the trigger lock for the trailer when connected or disconnected from you vehicle, and the coupler lock to secure it when disconnected. These locks are all keyed alike for your convenience. I've attached a video to assist.
view full answer... - Availability of Universal Keyed Alike Trailer Lock Set that Fits 2-5/16 Inch CouplersThe Master Lock Universal Keyed Alike Trailer Towing Lock Set, # 3794DAT, is a universal fit coupler lock designed to fit most couplers. It fits 1-7/8 inch, 2 inch, and 2-5/16 inch couplers. I have included a video review of just the coupler lock below. The Hitch Lock fits both 1-1/4 inch and 2 inch trailer hitch receivers and the coupler latch lock will fit latches up to 2 inches wide with a 1/4 inch or less hole diameter. I have included a link below to a demo video of this set.
view full answer... - Trailer Hitch Lock Recommendation for In-Use and Stored TrailerWe do have lock kits that allow you to secure your trailer whether it is coupled and ready to tow or not in use. I recommend going with the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT because it comes with locks both for the trailer and for the ball mount, plus everything is keyed alike so you don't have to fumble around with the keys trying to remember the correct one for each lock. I have attached a review video for you to check out.
view full answer... - Trailer Hitch Lock Set to Secure Trailer At All TimesYou'll want to get the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT. It provides you with a hitch lock for the trailer when attached to your receiver. You also get a keyed alike receiver lock for your draw bar. And when its in storage the Coupler lock will protect anyone from grabbing it with a device that would normally slide into the coupler. It is all keyed the same so you only need to keep track of one key and includes a convenient carry back to keep everything...
view full answer... - Masterlock Trailer Hitch Lock Set Recommendation for a 2014 Forest River Rockwood 21ssThe Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT should work on your 2014 Forest River Rockwood. The fact that you have a weight distribution hitch should not matter. This locking set comes with 3 different ways that it protects your towing setup. First it has a coupler lock that will deter your trailer from being stolen when not connected to your tow vehicle. Secondly, it has a coupler latch lock that keeps others from releasing your trailer once it is hooked...
view full answer... - Recommended Trailer Locks Keyed AlikeWe don't have a specific page for keyed alike locks and because it is an older answer, we may have had one at that time. We do have a few lock kits that are keyed alike for coupler, latch, and hitch pin. I recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches # 3794DAT to get all the locks for a trailer keyed alike for securing the entire trailer. If you let me know what you are looking for specifically, I can be of further help.
view full answer... - What Size Couplers Will the Coupler Lock Fit in Universal Keyed Alike Trailer Lock Set # 3794DATThe coupler lock that is part of the Master Lock Universal Keyed Alike Trailer Towing Lock Set, # 3794DAT, is a universal fit coupler lock designed to fit most couplers. It fits 1-7/8 inch, 2 inch, and 2-5/16 inch couplers. I have included a video review of just the coupler lock below. The Hitch Lock fits both 1-1/4 inch and 2 inch trailer hitch receivers and the coupler latch lock will fit latches up to 2 inches wide with a 1/4 inch or less hole diameter. I have included a link below...
view full answer... - Span of Coupler Lock Included With Master Lock Trailer Hitch Receiver Lock and Coupler Lock SetYes, the coupler lock included with the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT will work for your horse trailer. The cylinder adjusts from 9/16" to 2-3/4" along the shank so 2-1/4" won't be a problem.
view full answer... - Will Master Lock Coupler Lock Fit a Yoke Style Trailer CouplerYes, the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches Item # 3794DAT should still work just fine on your yoke style trailer coupler. I have included a link to a video review of this lock set for you.
view full answer... - Recommended Hitch/Coupler Lock Set For a 2022 Forest River Cherokee Alpha Wolf 33BH-L Travel TrailerI recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT for your 2022 Forest River Cherokee Alpha Wolf 33BH-L. This lock set includes a receiver hitch lock for 2" and 1-1/4" receiver, coupler latch lock and coupler storage lock. All locks are keyed alike to reduce the different keys you need to carry.
view full answer... - Recommended Coupler Lock For a 2-5/16" Trailer CouplerI prefer to use the Master Lock Universal Trailer Coupler Lock # 379DAT as it works with a wide variety of trailer ball couplers from 1-7/8" to 2-5/16". We have the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT that includes this same coupler lock along with a coupler latch lock and receiver lock that are all keyed alike.
view full answer... - Recommended Ball Mount And Lock Set for Curt Trailer Hitch Receiver 13077 On a 2015 BMW X5 MThe etrailer Ball Mount Kit # 989900 is a great option when you do not know the height for the trailer coupler. This kit will come with 2 ball mounts, a 1-7/8" hitch ball , 2" hitch ball, carrying case and 2 receiver hitch pins. The ball mounts have different rise and drop measurements allowing you to match them as close as possible to keep your trailer level. With the Curt Receiver # 13077 on a 2015 BMW X5 in our shop we measured the receiver height at 15". The ball mounts above will...
view full answer... - Class III Pin Hole Diameter for Trailer Hitch Receiver The etrailer Trailer Hitch Receiver # e98841 has a pin hole to accept a 5/8" pin. The Length of the pin needs to be at least 2-1/2" between the lock and collar or bend in the pin. I recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT. This set will give you locking pins for both 1/2" and 5/8" receiver pins. A trailer coupler lock so that your trailer cannot be removed from your vehicle when connected. And lastly a storage lock for the trailer to deter...
view full answer... - Recommendation For Locks To Prevent Theft Of A Camper TrailerIf you are wanting to lock the trailer to your 2002 Isuzu Trooper and you have a 2 inch hitch receiver, I would recommend the etrailer Trailer Hitch Receiver And Coupler Lockset, part # e99039. This is a set of locks that will lock the ball mount to your tow vehicles 2 inch hitch and also lock the trailers coupler to the hitch ball. Both of the locks can be keyed alike, so only one key is needed for both locks. Locking your trailer at both connections will add time when somebody is trying...
view full answer... - BOLT Trailer Coupler Lock Theft DeterrantThe BOLT Trailer Coupler Lock # BL7032495 is theft deterrent. I can't say there are any lock systems out there that will 100% not come off. It really comes down to how good the thief is and how hard he is willing to work for it. The benefit to this system is it does fit a universal application for trailers and it will one time code to your specific Toyota Key. I recommend the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT. It is a lock system that you can used when...
view full answer... - Is the Hitch Lock Included in Master Lock Set # 3794DAT Long Enough for 2-1/2-Inch Hitch ReceiverThe Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT that you referenced is intended for use on smaller 1-1/4-inch (Class I and Class II) and 2-inch (Class III and Class IV) hitches. The hitch lock included has a center span of 2-3/4-inches and this will be too short for 2-1/2-inch hitches. However, we do offer separate hitch locks suitable for use on your 2-1/2-inch hitch. The link I attached will let you see all such standard hitch pin locks for this size hitch....
view full answer...
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Info for this part was:
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Updated by:
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Installed by:
Cole B
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Timmy B.
4/16/2020
Very pleased. Glad to have one key for all locks.