There are several advantages of having a box trailer lock. We are here to help you choose the right one for your purposes from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Amplock Box Trailer Lock READ REVIEW

Best For Nice Fit: Buy: Master Lock Box Trailer Lock READ REVIEW

Best For Worth The Price: Buy: Boyisen Box Trailer Lock READ REVIEW

Best For High Quality Semi Truck Accessories: Buy: Equipment Lock Company Box Trailer Lock READ REVIEW

Best For Great Price: Buy: Hitchsafe Box Trailer Lock READ REVIEW

Best With Ball Mounts: Buy: Reese Box Trailer Lock READ REVIEW

Best For Boat Trailer: Buy: Czc Auto Box Trailer Lock READ REVIEW

Best For Musical Instruments: Buy: Proven Industries Box Trailer Lock READ REVIEW

Best For Small Size: Buy: Cenipar Box Trailer Lock READ REVIEW

Best For Container: Buy: Sincerityli Box Trailer Lock READ REVIEW

Best Overall: Amplock Box Trailer Lock

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Amplock makes beautiful and great locks with classic and higher-grade materials. The Amplock Box Trailer Lock is designed to fit tightly each coupler with specific sizes and shapes. Provided with 2 keys and a unique security code with the potential of millions of key combinations. The lock includes advanced security features that increase durability and deterrence abilities.

The lock is good for bullet proof, it is designed to worth every penny and has a good design. Further, the lock is one of the weaknesses of the locks that seem heavy duty, but ultimately not against most basic diary tools. Finally, the amplock box trailer lock will be ineffective against mallet impacts.

Most customers agree that the lock can be broken into, but the idea here is that it would take more time and noise than a thief would be willing to risk to remove this thing. And, a few also found that the lock is designed to fit a 2 5/16 a-frame trailer hitch. Moreover, a few strongly agree that the shape of the lock clamps to the coupler and can not be pulled off. To sum up, at the price, they believe that they got a steal of a deal with it.

• This can be used on enclosed or open trailers, rv, boat trailers and more.
• This fits most any 2 5/16 ball hitch tongue.
• This works great, is very helpful, no doubt, and has a clean design.
• This provides is worth every dollar spent on it.

Best For Nice Fit: Master Lock Box Trailer Lock

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Next on the list, we've got yet another lock that manages to win our hearts. It's the Master Lock Box Trailer Lock and it's widely considered as one of the most convenient locks you can buy. The master lock box trailer lock works fine, It provides great value and has a simple design. Make sure this fits by entering your model number. This lock protects unattended trailers and guards against tow - away theft.

Lastly, the master lock box trailer lock is made with a very obvious deterrent, It locks securely and has a durable design.

Most buyers agree that the lock is on when leaving it alone, or remember to remove it when backing up the truck to connect. In addition, a few also found that the lock looked like a pretty good one. And, a few say that the lock is easy to move to the side by hand after locking. In conclusion, for most customers, Master Lock product was what they were looking for.

• This uses precious seconds. Additionally, it is perfect for any type of trailer.
• This is the best option for trailer security.
• This lock is one solid piece, which makes it very easy to install.
• This fits under the coupler and locks right on.

Best For Worth The Price: Boyisen Box Trailer Lock

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If you often find yourself scrambling for a convenient and suitable lock, Boyisen Box Trailer Lock should be your first option for buying. The boyisen box trailer lock is made for worth the price, is simple to attach and it provides great value. Heavy duty steel, drill resistant steel material with well coated, prevents the lock from breaking or weather corroding. In addition, it is inexpensive and it locks very easily.

Finally, the boyisen box trailer lock fits a standard sized king pin.

Almost all buyers agree that the lock is easy to install as advertised. And, a few say that the lock is easy to attach and a good piece of mind. Moreover, a few strongly agree that the lock is mainly a deterrent for the "casual" thief looking for an easy score. In short, many have used the lock for more than a few months without letup, and it shows no sign of giving up.

• This will be more convenient while locking or unlocking the 5th wheel under the trailer.
• This will move to another one without a lock.
• This fits with the adapter on the pin box.
• This works as described and it makes for solid construction.

Best For High Quality Semi Truck Accessories: Equipment Lock Company Box Trailer Lock

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The features department is where the Equipment Lock Company Box Trailer Lock truly manages to shine. The equipment lock company box trailer lock is adjustable to fit doors with vertical locking bars from 9-3/4" to 16" apart. Built in high security barrel lock system or combination lock. The equipment lock company manufactures crime prevention locks for the heavy equipment industry.

The lock is available for the heavy duty cargo door lock for odd size container bars 17. Further, the lock is made of two square steel tubes, one 2" and one 2-1/2", with 3/16" thick walls, that fit together. Most importantly, the equipment lock company box trailer lock fits all whiting and it is very strong.

Almost all buyers opine that the lock has worked as advertised for over a year. In addition, a few say that the lock is easy to use, easy to store when not locking it closed, holding up well now almost a year into it, direct sunlight in socal hasn't made the powder coating fade or chalk yet. Further, a few say that this same lock has been replaced three times. Overall, most buyers agree that the lock suits them best, and no one questions it.

• This does not have enough inner bar to make it feel very stable.
• This fits doors 32" - 40" apart.
• This is designed for easy use and it is highly recommended.
• The lock weighs 13 lb.

Best For Great Price: Hitchsafe Box Trailer Lock

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Next on the list, we've got yet another lock that manages to win our hearts. It's the Hitchsafe Box Trailer Lock and it's widely considered as one of the most convenient locks you can buy. The hitchsafe box trailer lock can also be utilized for sharing access with friends and family or special situations such as outdoor sports where carrying keys can be problematic and credit cards and cash left inside the vehicle would otherwise run the risk of being stolen. If going in a 2.5 inch receiver you will need longer bolts. In addition, it allows for easy install, fits as advertised, it makes for solid construction and has a superior design.

Lastly, the hitchsafe box trailerlock is very strong, works perfectly, It is really impressive and has a waterproof design.

Almost all customers opine that the lock is easy to install and will fit a standard tow hitch. Also, they also found that the lock has worked well so far, no signs of water intrusion despite car washes and rain storms. Further, a few also found that this is a great accessory to add on for any one that has a hitch.

• It is nice to carry a spare key.
• This fits perfect on the 99 chevy suburban.
• This comes with different size spacers to fit the holes in the hitch.
• This is great for preventing accidental lock-outs.

Best With Ball Mounts: Reese Box Trailer Lock

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Reese line of locks comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Reese Box Trailer Lock works good so far, is reasonable, it feels well made and has a durable design. The distance between lock shackle holes center to center is 4-1/2 inch.s. The Reese towpower universal coupler lock is a premium lock constructed with an aluminum body and a heavy - duty steel lock bar.

Above all, the reese boxtrailer lock is adjustable with 11 locking positions and fits 1-⅞”, 2”, and 2-5/16” couplers.

Almost all buyers quickly discovered that the lock works well with the 1 7/8 inch hitch but does. Moreover, a few also found that the lock provides pretty cheap insurance. In addition, they also found that the lock will deter most thieves looking for an easy steal.

• The advanced lock resists picking, prying and drilling outs, making this an essential safeguard.
• It is easy to pick key cut.
• This is cheap insurace for an expensive trailer.
• This is easy to remove from the package and super-easy to install.

Best For Boat Trailer: Czc Auto Box Trailer Lock

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The best part: Czc Auto Box Trailer Lock costs comparatively little and it is available to ship in 24 hours. The czc auto box trailer lock has secure locks, is reliable, it is great for perfect size and has a simple design. Manufacturer says: Please verify the dimension and length of the pin you want before purchasing our coupler hitch lock pin. Further, it is compact, it provides great value and has a good design.

The lock is made of high-strength steel to deter theft. Most importantly, the czc auto box trailer lock is good for good quality, It works for anti theft and has a straight - forward design.

Most buyers quickly discover that the lock is easy to use but more so, feel secure. Also, they also found that the lock is more difficult to break than all the much more expensive ones. And, they strongly agree that the lock fits perfectly, feels secure and well made. In short, at the price, they believe that they got a steal of a deal with it.

• This is a pretty standard, low - priced hitch coupler lock.
• The manufacturer asked how to operate our trailer tongue coupler lock.
• Coupler locking hitch pin's application: tow trailer boat rv truck car.
• This will keep honest folks from stealing, or add a few minutes for a pro.

Best For Musical Instruments: Proven Industries Box Trailer Lock

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The proven industry box trailer lock is suitable and reliable and fits well with your daily use. Also, the proven industry box trailerlock is very helpful, It is ideal for musical instruments and has an innovative design. The Manufacturer says: Our strong coupler lock fits select 2-inch trailer couplers to help keep your trailer secure. This custom - tailored lock will only mount on very specific 2 - inch couplers. Finally, the proven industry boxtrailer lock looks amazing in black and is available in 4 other colors: purple, blue, blue etc., so, we bet you will like one of these.

Almost all buyers quickly discovered that the lock is very heavy and it doesn’t have many ways to fit a pry bar to it. Further, they strongly agree that the lock be used for 10+ years. Moreover, they say that the pop lock gets completely encased inside so it 's flush with the collar of the lock. Overall, buyers found this to be one of the best locks for daily purposes.

• This is brand new, it is best for ease of use and has a great design.
• This is the cost if someone takes the trailer.
• This offers security camera footage of the felon in action.
• This will make a lot of noise to get at it.

Best For Small Size: Cenipar Box Trailer Lock

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If you often find yourself confused about convenient and suitable lock, Cenipar Box Trailer Lock is your solution. The cenipar box trailer lock will not be exposed when fully tightened and cannot be cut off. The manufacturer says: We will try our best to satisfy every customer. The trailer hitch lock is durable and rust - free.to prevent corrosion in all weathers.

Most importantly, the cenipar box trailer lock has better to prevent corrosion and anti-aging performance, the color retention time is relatively shorter.

One customer says - "Uality lock at a good price. ". A few also found that this hitch lock is easy to use, easy to install on most trailers with the correct dimensions and very sturdy.

• The black trailer coupler lock is small size for easy carrying.
• The manufacturer says: we can solve the problem for you right away.
• This is best for solid metal, it is great for high-performance and has a durable design.
• Protects your trailer and tow ball from theft.

Best For Container: Sincerityli Box Trailer Lock

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The Sincerityli Box Trailer Lock is capable of outshining several other locks featured in this list in overall features for the price point. The sincerityli box trailer lock is easy to open, is made with high-quality steel and it is very happy. Manufacturer says: For your convenience, we provide you with 2 keys to make sure of normal use. Moreover, it is made for wide application and it works with certain issues.

The lock can be used in trailers, storage container,s construction office site. Most importantly, the sincerityli box trailer lock is high-efficiency to utilize this lock with a spring lock made of tubular pins.

Almost all buyers quickly discovered that the lock is affordable and works great. And, they say that the lock will be a tight squeeze and fit but it will latch to the cargo doors. Without any doubt, this lock passed the test and had very satisfied buyers eager to share their experience.

• Minor adjustments may be made to align the locking pin and holes.
• Delivers what they promise.