It is important to have the best harbor freight trailer lock. We are here to help you pick the best one for your needs from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Trimax One Key READ REVIEW

Best With Ball Mounts: Buy: Reese Harbor Freight Trailer Lock READ REVIEW

Best For Wider Hitches: Buy: Czc Auto Harbor Freight Trailer Lock READ REVIEW

Best For Trav Trailers: Buy: Reese Universal Coupler Lock READ REVIEW

Best For Solid Steel: Buy: Trimax Harbor Freight Trailer Lock READ REVIEW

Best Overall: Trimax One Key

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The look and feel of these locks are consistent with the high quality we're used to from the rest of Trimax's lineup. The Trimax One Key comes with 3 locks, It is very happy and has a tough design. Make sure this fits by entering your model number. And, it has secure locks, looks sturdy, looks great and has a good design.

Above all, the trimax one key is easy to use and weather resistant.

Almost all customers opine that the lock will keep people honest. And, they strongly agree that the lock is known from prior reviews. And, a few also found that this lock may take 30 minutes, so it does a better job than ordinary locks. To sum up, many have used the trimax one key for more than a few months without any complaints, and it shows no sign of giving up.

• This will keep the non - professionals at bay.
• This comes with a total of 9 keys.
• This is good as their customer support.
• This is the perfect lock for trailer doors.

Best With Ball Mounts: Reese Harbor Freight Trailer Lock

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The Reese harbor freight trailer lock's material feels more premium than its price would suggest. The Reese harbor freight trailer lock works perfectly. It is made for piece of mind and has a durable design. The advanced lock resists picking, prying and drilling outs, making this an essential safeguard. The Reese towpower universal coupler lock is built strong and designed to fit 1-⅞ ”, 2 ”, and 2 - 5/16”couplers.

The lock comes with ball mounts, It is perfect for boat trailer and has a great design. Above all, the Reese harbor freighttrailer lock is designed for good fit, is reasonable, it fits perfectly and has a clever design.

Most buyers found that the lock is a good preventative to detour theift. Moreover, they strongly agree that the lock is more of a visual deterrent than anything. In addition, they also found that the lock can be used as a lock when the trailer is hooked up to the truck. Therefore, most customers call the lock suits best, and no one questions it.

• This is the reason why people ask for Reese by name.
• The distance between lock shackle holes center to center is 4-1/2 inchs.
• This is adjustable with 11 locking positions and fits 1-⅞”, 2”, and 2-5/16” couplers.
• This can be tricky to get on/off the first few times for noobs.

Best For Wider Hitches: Czc Auto Harbor Freight Trailer Lock

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The Czc Auto Harbor Freight Trailer Lock might be a relatively new release, but it's still nothing short of impressive this year. The czc auto harborfreight trailer lock is very nice, is reliable, it is made with high-strength steel and has a great design. Manufacturer says: Our 1/4 inch trailer tongue lock push-to-lock design without a key, After hearing "click", you just need to pull the lock head to ensure it is working. The 1/4 inch trailer coupler lock is good at detering theft and preventing corrosion.

Finally, the czc auto harbor freight trailerlock looks good, worked perfectly, It is perfect for boat trailers and has a durable design.

Almost all buyers agree that the lock is good for wider hitches. In addition, they also found that the lock is a tight fit but that’s why someone can’t cut it off very easily. And, they also found that this lock is the easiest to use, but it wo n’t work on all trailers with 2 - 1/2 ” couplers. In short, many customers have used the czc auto harborfreight trailerlock for more than a few months without any problems, and it shows no sign of giving up.

• It has a 1/4 inch diameter black tongue lock pin with a 2-1/2 inch effective length.
• Help to improve the security of the black coupler lock.
• This fits latch-type couplers for towing boat truck rv car.
• This comes with zinc alloy, It is reasonable and has a good design.

Best For Trav Trailers: Reese Universal Coupler Lock

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate lock. The Reese universal coupler lock is exactly that - it's a simple lock that hits all the right notes. The Reese universal coupler lock includes a swiveling clip additionally fits both 5/8 in., and 1/2 in. Make sure this fits by entering your model number. And, the lock is great for special note, It is very nice and has a very good design.

The lock is designed to provide excellent towing. And, this is best with amazing value, It is very happy and has a good design. Finally, the Reese universal coupler lock is real nice and it works perfectly.

Most buyers agree that the lock will only keep honest people honest. In addition, they say that the lock can be used on camping trailers and utility trailer camping trailers stay on the street, so it is good to have it secured. Further, a few strongly agree that the lock has all steps of the process covered with this package. In short, at the price, they believe that they got a steal of a deal with it.

• This fits all sizes of hitch.
• This is great for locking your trailer.
• This can be cut easily with the right tools.
• This fits but kind of sideways for some reason, not straight.

Best For Solid Steel: Trimax Harbor Freight Trailer Lock

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The Trimax Harbor Freight Trailer Lock is capable of outshining several other locks featured in this list in overall features for the price point. The trimax harbor freighttrailer lock is perfect for great quality, makes for perfect condition, It is perfect for boat trailers and has a great design. A 5/8" (16mm) hardened steel shackle helps ensure your trailer is secure, even when left unattended. Also, the lock works perfectly, It is best for solid metal and has a simple design.

The lock is constructed of solid hardened steel and heat treated aluminum. Moreover, it has a patented dual locking system and a rust - proof hammer tone epoxy finish for extra security. Finally, the trimax harbor freight trailer lock is highly recommend, It feels solid and has a very good design.

Almost all buyers found that the lock provides two keys, looks great and does what it should. And, they say that the lock is perfectly with the round shape of the ball-like coupler. Further, they say that the lock is easy to use and provides extra security.

• This lock is applied underneath where the hitch “ ball ” goes.
• One size fits all (from 1-7/8", 2", to 2-5/15", all coupler types).
• The new design can be used as a universal coupler lock or u-lock.
• Key hole cover keeps out dirt.