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  3. Fits 1-7/8 Inch Ball
  4. Fits 2 Inch Ball
  5. Fits 2-5/16 Inch Ball
  6. Surround Lock
Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers

Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers

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Trailer Coupler Locks
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Product Images

In Use/Installed

Customer Photos

Protect almost any trailer from theft with this universal coupler lock. Uses a unique "ball" and shackle to fit a variety of coupler sizes and styles. Secures trailer when it is not in tow. Can be keyed alike to match other Fastway locks. Lowest Prices for the best trailer coupler locks from Fastway. Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers part number DT25013KA can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (605)
  • Q & A (182)
  • Photos
  • Used (1)
  • Why etrailer?

Fastway Trailer Coupler Locks

  • Fits 1-7/8 Inch Ball
  • Fits 2 Inch Ball
  • Fits 2-5/16 Inch Ball
  • Surround Lock
  • Keyed Alike
  • Fastway
  • Universal Application Lock

Protect almost any trailer from theft with this universal coupler lock. Uses a unique "ball" and shackle to fit a variety of coupler sizes and styles. Secures trailer when it is not in tow. Can be keyed alike to match other Fastway locks.


Features:

  • Universal design protects most trailers from being towed away
    • Multistep Uni-ball fits into any size ball coupler
    • Unique bend in reversible shackle lets it snug up tight to most types of couplers or coupler latches, including:
      • A-frame, straight channel, round tongue, flat plate and surge-type couplers
      • Trigger, pin, thumb and wraparound yoke latches
  • Tube key lock cylinder provides better security than standard key mechanisms
    • Harder to pick
    • More difficult to duplicate keys
  • Anti-drill pin discourages attempts to drill out the lock
  • Bolt-blocked locking system prevents thieves from prying the lock open
    • Uses internal bolts to engage the shackle's notches
  • Hardened, chrome-plated shackle and nickel-plated housing
  • 2 Keys included
  • Lock can be keyed alike to match other Fastway locks
    • To order keyed alike, select "Keyed Alike" from drop-down menu above and enter number of locks in Quantity box


Specs:

  • Fits most 1-7/8", 2" and 2-5/16" ball couplers
    • Maximum coupler width: 4-1/2"
  • Shackle diameter: 5/8"
  • Limited lifetime warranty


Note:

  • Lock can be keyed alike to match other Fastway locks.
  • To order keyed alike locks, select "Keyed Alike" from drop-down menu above and enter number of locks in Quantity box.
Dimensional Diagram
Close up of bolt block mechanism

This close-up bottom view shows the solid steel bolt in the locked position where it would engage the shackle. (The shackle has been removed to show the bolt.)

DT25013 in useDT25013 in use
DT25013 in useDT25013 in use
DT25013 in useDT25013 in use

The above images show the lock in use on several types of trailer couplers





DT-25013KA Diversi-Tech Maximum Security Trailer Coupler Lock

Item # DT25013KA






Customer Reviews

Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers - DT25013KA

Average Customer Rating:  4.7 out of 5 stars   (605 Customer Reviews)

Protect almost any trailer from theft with this universal coupler lock. Uses a unique "ball" and shackle to fit a variety of coupler sizes and styles. Secures trailer when it is not in tow. Can be keyed alike to match other Fastway locks.

- DT25013KA
by:

very strong and sturdy BUT has two small problems the reason for not giving 4-5 stars they have to be removed and oiled every three months if you don't you will have hell of a time unlocking them, at first you think the key is not working and then you think that the lock has jammed to aid in this aggravation the lock will not release unless you keep key turned ( not spring loaded, they saved money by not adding this feature)(mistake)a a bit hard to hit hitch with hammer and keep key turned and not break key also tolerance is way to tight which of course leads to main reason for it seizing up. Fix the key and a little most tolerance or do not use it for long term storage. yes I kept the lock clean of dirt and debris.


Comments
it works great but would have liked some information on maintenance WD40 or 3in1 oil or Masterblaster and and where to put it in the lock or the pins that lock it had some problem with them locking up if they sat to long with out being opened or closed have five trailers 3 of them can set for months be for i use them BUT the good news nobody has even made an attempt to steal them like i said good stuff well built i trim trees for a living i get robbed more than the bank
Paul - 03/11/2021


- DT25013KA
by:

I wanted to get a good quality lock for my new trailer and looked at several different videos showing plus or minuses of this type of lock. I wanted a good quality unit which would not break the bank. etrailer came through. I am pleased with my purchase and already have it installed.


Comments
The lock is still going strong and has held up well. Lubricate it regularly since it is out in the weather but overall a good product
Tim - 05/26/2021


- DT25013KA
by:

I had a hard time finding a tongue lock to fit my Jayco with an underslung coupler, this fits perfectly.



- DT25013KA
by:

Best hitch lock, I have 6 locks now. First 2 purchased 9 yrs ago, fits all my different styles of trailers, very secure lock.



- DT25013KA
by:

Great product & great service. We ordered this lock for our 2018 Jayco Jay Feather travel trailer. After buying and returning similar locks at our local camper and automotive stores that did not fit, we turned to the internet and found etrailer.com. The website made it easy to shop. It showed the dimensions for this lock. We knew it would fit when we received it. We are extremely satisfied with the service and product we received. Thanks, etrailer!



- DT25013KA
by:

I just purchased several items from etrailer. See photo for trailer lock and a new set of chains. I keep my trailer on the street and thought I had better start securing a little better. This hitch lock installed easily enough. I purchased three of them keyed alike for three different trailers, work trailer, camping trailer, and utility trailer. Super easy. This is my third purchase from etrailer over the years, and the customer support is out of this world. Actual people who call and email to follow up. etrailer sets the standard for what customer support should be.



- DT25013KA
by:

Perfect fit for my older 1990's 26ft sailboat trailer - Solid lock - Easy to use - Nice addition to the "Tow Ready - Butterfly Lock" I also purchased from etrailer.com for the latch - Peace of mind is everything - 5 Stars on both locks



- DT25013KA
by:

Nicely built, parts fit well together and seems well designed. Does the job well. Being chromed steel the lock is quite visible when locked onto the hitch and I suspect that alone would act as a deterrent to a prospective thief. I bought two units and they give me peace of mind.


Comments
After a year. . . no problems! Nice thing about these locks is that you need to use the key to attach the lock that way you wont accidently lock it with a miss-placed key! Almost foolproof. . . at least David proof!
David S - 06/13/2020


- DT25013KA
by:

It is easy to put on and take off of trailer tongue. Material seems strong finish is great. Yes I would recommend.



- DT25013KA
by:

Great product! This is a repeat buy for us! We have one for our small horse trailer and liked it so much we bought another! Great customer service!



- DT25013KA
by:

This lock works perfectly fine on either of my boat trailers.



- DT25013KA
by:

Excellent product, fits the coupler on my Airstream trailer perfectly, very heavy strong secure lock.


Comments
Works perfectly!
Joe Q - 10/02/2017



- DT25013KA
by:

Very fast shipping, it arrived two days early. The lock feels a little gritty, I put some air tool oil in it to smooth it out. Overall very pleased with it



- DT25013KA
by:

Of the various trailer ball locks, this one was by far the most well built. I am glad I waited and found this on on etrailer.com.



- DT25013KA
by:

I ordered two of these locks keyed for both of my new trailers E TRAILER. ROCKS


Comments
great never had any problems with them
Charlie - 05/31/2019



- DT25013KA
by:

The only reason I did not give it 5 stars is the key number. I needed a particular key number and even though you could select “keyed alike” there was no place to enter the key number. I had to contact etrailer to get the correct key on the order.


Comments
Thank you for your review. Our Customer Service team reaches out about the key number or you can reach out if you do not want to wait for their call or email.
-- Etrailer Expert Sierra K - 07/19/2021


- DT25013KA
by:

Great product, worked well, great price. Love etrailer!!!



- DT25013KA
by:

This is a wonderful product for securing your trailer! In our business we have 4 trailers, we use one on each of them. You can order them "keyed alike" so they all have the same key. Highly recommend this product!



- DT25013KA
by:

Received on time as promised. Locks work well on all 7 of our trailers. Seem to be very secure on tongues.



- DT25013KA
by:

RUST - Will significantly rust if you live near the coast. I bought 3 of these - all keyed the same - for 3 different trailers. The 2 I use frequently have lots of surface rust, but still work. The one I use to secure a trailer that doesn't get used often rusted solid. Couldn't turn the key. Once I got the key to move with PB Blaster, the lock mechanism wouldn't move - would not release from the bar. I have coated all these locks with corrosion protectant periodically and it still rusted. Had to cut it off.



- DT25013KA
by:

We have 5 different trailers with different hitch types. The universal coupler was right up our alley. The "keyed alike" option was a must.



- DT25013KA
by:

Just received the lock for my trailer, looks to be very well constructed. Fits my trailer very well. Hope it works as good as it looks



- DT25013KA
by:

Keeps everything secure. Heavy duty re commend



- DT25013KA
by:

The lock is fantastic! Now I need to upgrade the other locks I have on the trailer.



- DT25013KA
by:

Have 3 of these now. The keyed alike ability makes this an easy choice. The finish holds up well in the elements, and the cover on the lock keeps debris out so the key motion works very well.


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Show More Reviews

Ask the Experts about this Fastway Trailer Coupler Locks

  • Recommended Lock for Demco eZ-Latch Coupler
    To secure your PJ Trailer that's equipped with the Demco eZ-Latch Coupler # DM14040-81 I highly recommend the Fastway Universal Trailer Coupler Lock # DT25013KA, which doesn't require a lip on the coupler for a proper connection. This is a heavy-duty lock that uses a ball and shackle to prevent potential thieves from coupling their truck to the trailer and taking off. Its hardened chrome-plated construction will resist corrosion and the bolt-blocked locking system prevents the lock from...
    view full answer...
  • Will Fastway Coupler Lock DT25013KA Fit Surge Brake Actuator
    Of all of the coupler locks we offer the Fastway Universal Trailer Coupler Lock # DT25013KA that you referenced is the most universal and would have the best chance at fitting an unknown coupler. We don't know what coupler you would have on the trailer you mentioned but this lock can basically fit them all including surge brake couplers.
    view full answer...
    Image 1 for
  • Can Fastway Coupler Be Keyed Alike to Hitch Receiver Lock?
    The Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA you referenced does not have a keyed alike option to a hitch receiver lock like the Fastway Trailer Hitch Receiver Lock # FA86-00-3160.
    view full answer...
  • 2013 Ranger Boat Trailer Coupler Lock Recommendation
    The most universal and effective coupler lock we offer is the Fastway Universal Lock part # DT25013KA which I would recommend for your application. We've found this basically fits all couplers that are less than 4-1/2 inches in width. I attached a picture that shows several styles of couplers it fits as well as a review video that shows it fitting them as well.
    view full answer...
    Image 1 for
  • Best Surround Style Trailer Coupler Lock for Square Coupler Head
    The best surround style trailer coupler lock we offer for the square style trailer couplers is the Fastway Universal Trailer Coupler Lock part # DT25013KA because of the long u-bolt which will accommodate a much taller coupler head like those on the square style. I don't have any other better options from Baylock unfortunately.
    view full answer...
    Image 1 for
  • Recommended Coupler Lock for Trailer with 2 Coupler
    The Fastway Universal Trailer Coupler Lock part # DT25013KA is my recommendation for a trailer coupler lock that will be used to protect the trailer while not in use and detached from the tow vehicle. This coupler lock is universal so it will work with pretty much any trailer. The anti-drill pin helps further prevent the lock core from being drilling and the hardened shackles help further prevent the chance of it being able to be cut.
    view full answer...
  • Coupler Lock Recommendation for 2018 Airstream Basecamp
    I looked up pictures of the 2018 Airstream Basecamp and it uses a pretty standard style A-frame coupler. The best and most universal coupler lock we have for that would be the Fastway Universal Lock # DT25013KA. We have found that this fits nearly all styles of couplers very well.
    view full answer...
    Image 1 for
  • Coupler Lock Comparison for Securing a Travel Trailer
    Any type of lock you put on your trailer will be a theft deterrent. I recommend using the Fastway Universal Coupler Lock, part # DT25013KA, because it can mount on 1-7/8, 2 and 2-5/16 inch couplers and it fits on a wide variety of coupler types. The Diversi-Tech lock will be harder and noisier to break off than the Master Lock coupler lock which is a better deterrent for thieves. Wheel locks are also a secure option, but can be tedious to apply and still gives thieves a chance to hook...
    view full answer...
  • Recommendation for Lost Diversi-Tech Trailer Coupler Key
    If you know the key number you need all you need to do is order the part number DTKEYXXXX where the X's equal your key number. For example if you had key number part 5517 you would want # DTKEYR5517. If you don't know the key number you will have to replace the # DT25013.
    view full answer...
  • Coupler Lock Recommendation for UFP A-60 Brake Actuator
    We had the chance to install the Fastway coupler lock part # DT25013KA on an actuator like your UFP A-60 and found that it fit and worked well. Check out the picture I attached to see the lock installed on the coupler.
    view full answer...
    Image 1 for
  • Recommended Coupler Lock For Horse Trailer With 2-5/16 Inch Coupler
    If you are looking for a coupler lock when the trailer is parked and not hooked up to your towing vehicle I recommend the Fastway Universal Trailer Coupler Lock, part # DT25013KA. This lock slips inside the coupler where the hitch ball goes and has a hardened shackle that holds the lock in place. If you are looking for a pin-style coupler lock I recommend part # e98888. This lock has a 1/4-inch diameter pin with a 3-3/8 inch span and has a protective lock cover to help keep out dust...
    view full answer...
  • Best Coupler Lock for Travel Trailer with Bumper Pull Coupler
    The coupler lock we recommend the most is the Fastway # DT25013KA. This lock is great because it is very universal and can fit almost all coupler styles, is hard to defeat and our customers who have it really love it. I attached a review video that shows the lock being used for you to check out as well.
    view full answer...
  • Coupler Lock Recommendation for Vintage Avion Trailer
    Without seeing the coupler on your trailer the best coupler lock recommendation I can make would be a Fastway like part # DT25013KA as we have found that it fits nearly all coupler styles, works great, and is a favorite among our customers. In the review video I attached you can see all the different styles it fits and how easy it is to install. If you send me back a picture of your coupler I can see what AMPlock might fit it. I'd need dimensions as well.
    view full answer...
    Image 1 for
  • Recommended Trailer Coupler Locks for Wide Coupler Security
    For your Atwood Channel Tongue Trailer Coupler 80060, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA or Master Lock Heavy-Duty Coupler and Latch Lock Combo for 1-7/8", 2", 2-5/16" Couplers # 3784DAT are both good options. The latter doesn't have any restrictions of the width of the coupler.
    view full answer...
    Image 1 for
  • Coupler Locks That can be Keyed Alike
    We have coupler locks that can be keyed alike which are very similar to the MasterLock # ML389DAT, though unfortunately it cannot be keyed alike. The Fastway Universal Trailer Coupler Lock # DT25013KA can though, and like the MasterLock it works with 1-7/8", 2" and 2-5/16" couplers, and A-frame, straight channel, round tongue, flat plate and surge-type couplers. This coupler lock has been rated impressively high by a pretty large sample size of customers, with 311 reviewers leaving an...
    view full answer...
    Image 1 for
  • Recommended Tamper Proof Trailer Coupler Lock for Motorcycle Trailer
    If it were my bike and trailer, I'd use the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA. This coupler lock has a tube key lock cylinder to give better security and also has an anti-drill pin to discourage attempts to drill out the lock. Parking on a sloped driveway, you may want to consider The Wheel Club - Tire and Wheel Lock # WI490.
    view full answer...
    Image 1 for
  • Replacement Key Recommendation for Diversi-Tech Number R3115
    The key number you are looking for has been discontinued so you would have to re-key your lock with the # DTLBM02RK to get new keys and be able to lock your ball mount.
    view full answer...
  • Can Extra Keys be Ordered for Fastway Universal Trailer Coupler Lock?
    There are extra keys that can be purchased for the Fastway Universal Trailer Coupler Lock # DT25013KA. Once you have the lock and know your key number you can order extras; for example you'd want to order # FA-KEY-305 if your key number had 305 on it or # FA-KEY-309 if you had key number 309, and so on. I have linked the page with each of our replacement keys for Fastway once you find out your key number.
    view full answer...
  • Recommended Lock for 2 Inch and 2-5/16 Inch Couplers that Can Be Keyed Alike
    I do have a solution for you, however the Tow Ready Gorilla Guards like # 63227 for 2-5/16 inch couplers cannot be keyed alike. For a coupler lock that you can use with both your 2 inch and 2-5/16 inch coupler, I instead recommend looking at the Fastway Universal Trailer Coupler Lock # DT25013KA. This particular lock can fit most 1-7/8 inch, 2 inch, and 2-5/16 inch ball couplers, as long as they have a maximum coupler width of 4-1/2 inches. The lock can then be ordered keyed alike by...
    view full answer...
  • Recommend Trailer Coupler Lock That Will Help Deter Theft
    I walked out to our warehouse and pulled the Tow Ready Trailer Coupler Lock. The locking bar measures approximately a 1/2 inch in diameter. The representative at Tow Ready informed me that the lock is made of 1407 steel. I then contacted our representative at Fastway about the Universal Trailer Coupler Lock, part # DT25013KA. He informed me that this locking bar has a diameter of 5/8 inch hardened steel. He informed me that this is the biggest and strongest lock on the market and is...
    view full answer...
  • Warranty Information for the Diversi-Tech Universal Trailer Coupler Lock # DT25013
    The Diversi-Tech Universal Trailer Coupler Lock # DT25013KA has a limited lifetime warranty. As long as the damage to the unit wasn't from misuse it should be covered. I didn't find your name or email in our system so you would want to contact where you bought the lock from.
    view full answer...
  • Difference Between Fastway Universal Trailer Coupler Locks
    The difference between the two is pretty simple; the Fastway Universal Trailer Coupler Lock # DT25013KA is the version of the lock which allows you to order multiple locks keyed alike. It has a drop-down box on the product page that says "Keyed Alike" which you can choose if you wanted more than one lock that can all be used with the same key. The Fastway Universal Trailer Coupler Lock that had the part number DT25013 does not have that option so if you ordered multiples of this lock...
    view full answer...
  • Can the Fastway Trailer Coupler Locks Be Keyed Alike
    Yes, you can order the Fastway Universal Trailer Coupler Lock to be keyed alike to fit multiple trailers and use one key for all the locks. The part number you will need to use is # DT25013KA. At the product page click on the drop down window. Just select the Keyed Alike option. There is a small charge to have the each locks keyed alike.
    view full answer...
  • Recommendation for a 2-5/16 Inch Trailer Hitch Coupler Lock
    The highest rated and most popular 2-5/16 inch trailer coupler lock we carry is the Fastway Universal Trailer Coupler Lock, # DT25013KA. This lock actually will fit 1-7/8, 2, and 2-5/16 inch couplers. It features a pick-resistant lock cylinder and dual-action, bolt-blocked locking system that locks both arms instead of just one. To add even more security, you can use the The Wheel Club - Tire and Wheel Lock, # WI490, to one of your trailer wheels. This wheel lock fits tires up to 28...
    view full answer...
  • Coupler Lock Recommendation for a RAM A-Frame Coupler
    I have a few trailer coupler locks that will work for your RAM A-frame coupler. I recommend using a coupler lock like the Fastway Universal Coupler Lock, # DT25013KA. This coupler lock can also be keyed alike with part if you have mulitple trailers that you want to use the same key to lock.
    view full answer...
    Image 1 for
  • Keyed Alike Lock Set for a 2017 TAB Trailer
    I recommend Master Lock set # 3794DAT. It comes with various styles of locks that are all keyed the same so you won't have to worry about different keys for different locks. Three locks are included: hitch lock (for 1-1/4 or 2 inch hitches), latch lock, and coupler lock. I have linked a video review of this lock set.
    view full answer...
  • Can Bolt Cutters Cut the Locking Pin on the Tow Ready Trailer Coupler Lock
    A set of heavy-duty bolt cutters may be able to break the locking pin on the Trailer Coupler Lock. The locking pin for this coupler lock is 1/2 inch in diameter and is made of 1407 steel. There are heavy duty bolt cutters that are available at hardware stores that have the ability to cut up to 1/2 inch or 9/16 inch diameter objects. Another coupler lock that you may be interested in is the Fastway Coupler Lock, # DT25013KA. This lock uses a 5/8 inch diameter locking pin. Although there...
    view full answer...
  • Fastway Universal Trailer Coupler Lock with Keyed Alike Option
    For multiple multi-fit coupler locks that are keyed alike you can use part # DT25013KA. This is the same lock as part DT25013 but with the ability for you to select the Keyed Alike option for any quantity you require. Just click on the Keyed Alike menu tool and enter your total quantity, in your case 3 of item # DT25013KA. You'll receive three coupler locks that will all function from the same keys.
    view full answer...
  • What Coupler Lock to Use with Marvel Latch Lock 88555
    For couplers that have the Marvel Latch style the most popular coupler lock we offer is the Fastway Coupler Lock part # DT25013KA. This coupler lock would work very well for you. It can fit nearly all coupler styles and is highly reviewed by our customers who have used it. Because of that I would highly recommend it for you.
    view full answer...
  • Coupler Lock Recommendation for Multi-Fit Ball Coupler
    For the multi fit ball style of coupler you mentioned on your trailer the best coupler lock we offer is the Fastway Universal Coupler Lock part # DT25013KA as this is the most universal style of coupler lock we offer and it is very secure.
    view full answer...


Used Items Available
Used Picture for Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers

Condition: Like New

Notes: May have damaged packaging or minor cosmetic blemishes.

Our Price: $38.95
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