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Master Lock Trailer Hitch Locks
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Master Lock Trailer Locks
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Master Lock


  • Dependable products for securing your valuables
  • Largest manufacturer of padlocks and security merchandise
  • Innovative security options for a wide range of uses
  • Decades of leadership in locks and security




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Expert Answers about Master Lock

  • How to Reset Combination of Master Lock Backpack Lock # 1547DCM
  • Here are the instructions on how to reset the combination on your backpack lock (which is pre-set at the factory to open to combination 0-0-0): 1. With dials at 0-0-0 (or combination the lock was previously set to), push in the shackle (open the lock fully) 2. With shackle pushed in, set your new combination 3. Release shackle and scramble wheels to lock 4. Be sure to record your NEW combination as you are the only one who knows it! The lock may only be reset when it is in the...
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  • 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 Maximum Security Universal Trailer Coupler Lock, # DT25013. 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...
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  • Coupler Lock Comparison for Securing a Travel Trailer
  • Any type of lock you put on your trailer will be a theft deterrent. I would recommend using the Diversi-Tech Universal Coupler Lock, part # DT25013, 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. The Master Lock Coupler Lock, part # 378DAT, you referenced will only fit couplers for a 2-5/16...
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  • Anti-Theft Product Recommendations for an Enclosed Utility Trailer
  • The best rated and most popular 2-5/16 inch trailer coupler lock that we carry is the Maximum Security Universal Trailer Coupler Lock, # DT25013. This lock features a pick resistant lock cylinder and dual action, bolt-blocked locking system that locks both arms instead of just one. If you wanted even more security you could use a Wheel Club - Tire and Wheel Lock, # WI490, on one of your trailer wheels. This wheel lock fits tires up to 28 inches in diameter and 9 inches wide and 13 to...
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  • How Long are the EZ Grip Bungee Cords when Stretched Out
  • I went out to the warehouse and pulled EZ Grip Bungee Cord, 32 Inches, # 3031DAT, and the 24 inch model # 3030DAT, to measure them for you. The lengths listed are the unstretched lengths. When stretched out, each model can be as long as twice the original length. About 64 inches for # 3031DAT and 48 inches for # 3030DAT. I made a short video showing the elasticity of the bungee cords for you.
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  • Electric Winch Recommendation to Raise and Lower a Pop Up Camper Top
  • The Master Lock Electric Trailer Winch # 2953AT that you referenced only has a power load in function. So you would be able to raise the top of your camper but not be able to lower it in a controller manner. For a winch that can power in and out that would work better for you check out the part # 1220210. For pulley blocks you might also be interested in the part # SW2229A.
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  • How To Prevent Trailer Theft Beyond Hitch and Coupler Locks
  • One easy way to prevent someone from removing the ball would be to use a ball mount that has the ball attached (welded) to the shank. That way you won't have to weld a ball to a shank that isn't meant for that type of modification. Some examples include # 45325 or something adjustable that locks like # DTALBM6600. A Wheel lock such as # RA-25 would also be a good idea. The trailer would not be able to be moved with a wheel lock like this on it. And the ball mount/ball may be enough...
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  • Backup Camera that Will Plug In Line with a 7-Way Trailer Connector on a 2005 Toyota Tundra
  • We actually have a backup camera that you can plug in line with the 7-Way trailer connector. Take a look at # HM50002. I have linked a video showing an installation for you. As you can see, it will just plug in line with the 7-Way and retain all the trailer connector functions. If your 7-Way on your 2005 Toyota Tundra is not a US car connector type that accepts the plugs then the wiring does have provisions for being hardwired in.
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  • What is the Best Trailer Coupler Lock Made by Masterlock
  • Depending on the size and style of your trailer coupler I would recommend the following locks made by Master Lock. The first would be the Master Lock 1-7/8 inch and 2 inch Trailer Coupler Lock, item # 377DAT. If you have a 2-5/16 inch coupler the Master Lock 2-5/16 inch Trailer Coupler Lock, item # 378DAT, is an excellent lock that fits many styles of trailer couplers.
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  • Recommended Rear-View Camera Solution to Assist Hitching Gooseneck Trailer
  • Although many of the camera systems we offer might be modified or altered in some way that would allow the camera to mount to the inside of the rear window glass, none of them are designed to mount that way directly out of the box. My best recommendation for a camera-type solution would be the Swift Hitch Portable Wireless Camera System, available with a 4-hour battery, part # 04928 or a 10-hour battery, as part # SH02. Both systems are rechargeable and the cameras can be temporarily...
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  • Combination Reset for Master Lock Safe Space Portable Storage Box with Combination Lock
  • In order to reset the combination on the Master Lock Safe Space Portable Storage Box # ML5900D, you will need access to the inside of the box. The reset lever is a small, light gray lever on the top left hand side of the combination dial. You will need to push the lever to the right while setting a new combination. I have attached a photo showing the location of this lever for you, as well as a product review video that may help. If the box is closed and the combination is forgotten,...
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  • Recommended RV Camera Systems for 33-Foot 5th Wheel Trailer
  • We offer many backup camera systems for use on vehicles and RVs; all are shown on the linked page. These include basic backup cameras all the way up to wireless RV camera systems like those from Furrion, such as their digital Wireless Observation System # FOS48TA-BL that includes a water-resistant night-vision-capable camera and color LCD screen. Wireless design means really simple installation. Please refer to the linked review video for more on this excellent product. Given that the...
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  • Trailer Coupler Surround Lock Option for Wallace Forge 20K Coupler
  • I have a solution that may work for you, but after looking at photos of your coupler, the lack of a pronounced lip around the coupler means many of the style coupler locks you are looking for will not work correctly on your trailer. For a coupler lock that will secure inside the ball socket of the coupler, I really like the Master Lock 2-5/16 Inch Trailer Coupler Lock # 378DAT. My family uses this lock on our travel trailer to keep it secure. This lock has a large, flat plate to cover...
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  • How to Reset the Combination on a Master Lock Gun Trigger Lock
  • If the Master Lock Gun Trigger Lock # 94DSPT is locked and you have forgotten the combination you will have to reset the combination. To change the combination you will need to set dials to combination (combination is preset to 0-0-0 by factory). With dials set to combination, move release lever to open, or up, position. Pull apart the two sides of the gun lock. Next, you will need to use a pen to press and hold the reset button that is on the left side of the lock and select a...
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  • Locking Hitch Pin and Cable Lock Recommendation for a Thule Roadway Bike Rack
  • No, the Trailer Hitch Receiver Lock with Integrated 8 foot Cable, # 1470DAT, will not work with Thule bike racks, because the Thule bike racks have a uniquely threaded shank for their specific Snug Tite Hitch Locks and Anti-Rattle Devices. For your Thule Parkway, # TH956, I would recommend going with the Snug Tite Hitch Lock, # THSTL2, and the DeadBolt 10 foot Long Cable Lock, # CAB-10, to secure the bike rack and then secure the bikes to the rack and safety chain loops on your trailer...
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  • Availability of a Hardwire Back Up Camera System to Eliminate Bluetooth Interference
  • We do have a back up camera system that is a hardwire installation, but the Master Lock system, # 4843DAT is strictly wireless. Take a look at the Hopkins Rear View Camera with Backup Sensors, # HM60195VA. This system is hardwired from the camera to the monitor which will help to eliminate unwanted interference. I have included a link to a video showing a typical installation of this system for you.
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  • How to Change Passcode on MasterLock Safe Space Box part # ML5900D
  • To set the lock passcode for the MasterLock Safe Space Box part # ML5900D that you referenced you will need to hold the passcode set lever above the dial while you change the code to your desired passcode. When you release it will be set. To get the lever to release the passcode will have to be entered into the box. Since yours doesn't want to move now that you changed it that would indicate that it is set to the last passcode that you entered. Check out the review video I attached...
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  • Lock Recommendations for a Collar-Lok Style Trailer Coupler
  • It sounds like you have a Collar-Lok coupler such as # BD028244. For that type of coupler you could use lock # BLTL-23. The body is aluminum but the pin inside that goes way up into the coupler is steel. It fits 2-5/16 inch Collar-Lok couplers. For 2 inch models use # BLTL-22. Another option, if your coupler has the pin behind the collar to keep the collar from sliding back, is to use a lock such as # 28012 in place of the pin. This would prevent the collar from opening all the way....
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  • Can Multiple Master Lock Trailer Hitch Receiver Locks # 1480DAT be Keyed Alike
  • You can get multiple locks of part # 1480DAT keyed alike. What you will need to do is locate the box next to the picture that says keyed alike or keyed unique. Change it to read keyed alike. Below that select how many you want in the quantity box and that number of locks will be keyed alike and sent out.
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  • Will the Master Lock Tailgate Lock for Pickup Trucks Fit a Toyota Tacoma
  • According to my contact at Bully the Bully Tailgate Lock for Removable Tailgates # LH-090 should be a universal fit for your 2013 Toytota Tacoma. Unfortunately according to Master Lock the Tailgate Lock for Pickup Trucks # 8253DAT will not fit on your 2013 Toyota Tacoma. According to Master Lock this devise doesn't completely secure the tailgate to your truck.
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  • Can the Masterlock Electric Trailer Winch Be Used in Reverse to Pay Cable Out of the Winch
  • For powering loads in and out I would recommend the Superwinch LT2000 Electric Utility Winch, 2,000 lbs, item # 1220210, which also includes a freespooling clutch for fast payout. The Master Lock Electric Winch,Trailer Winch, item # 2953AT, is designed for power load in only. I cannot recommend any modification or alternate use of the winch other than what the manufacturer recommends.
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  • Changing Combination of Master Lock Mini Key Safe Part # 5408D
  • The combination of the Master Lock Mini Key Safe, part # 5408D is permanently set at the factory and cannot be changed.
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  • Extra Long Locking Trailer Hitch Pin for 2015 Toyota Tundra
  • The factory installed hitch on the Tundra is wider than a typical 2 inch receiver, so a normal 2 inch hitch lock won't fit. We offer an extended length lock, part # RH5-XL. Multiple locks are available keyed alike, use the drop-down box on the product page. We don't carry a lock with the part number you mentioned, so I tried looking it up online and found no result. I'm not sure where you'd be able to get a longer pin for your particular lock.
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  • Recommendation for Electric Winch To Pull 24 Foot 3300-Lb Grady White Boat on to Trailer
  • Because of the length of your boat I would recommend the Dutton-Lainson StrongArm Electric Winch, part # DL25200. This DC-powered winch is designed for boats up to 4,000 lbs and includes a wiring harness for easy installation. I am including a link to the installation instructions on the winch. The Master Lock Electric Trailer Winch, part # 2953AT, you have referenced, has a maximum boat weight capacity of 5,000 lbs , but only a maximum boat length of 18 feet. I would not recommend this...
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  • Hitch Pin Lock Recommendations For 2013 T & B Trailer
  • The hitch pin lock you will want depends on the size of the hitch you have. You can measure the size of the receiver opening on your hitch to determine the size hitch pin you need to order. I have attached a photo that shows where you need to measure on your hitch receiver. The blue line is the inside measurement and typically what is used when describing hitch sizes. The red line would be the measurement needed when considering the inside pin length. If your hitch has a 2 inch receiver,...
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  • Composition of Master Lock Key Safe and Trailer Hitch Receiver Lock # 1467DAT
  • After speaking with my contact at Master Lock, I have discovered the body of the Master Lock Key Safe and Trailer Hitch Receiver Lock # 1467DAT is made of stainless steel with a water-resistant lid that flips down to protect and conceal the combination lock. The lock itself is made of a combination of steel and chrome. I have linked to the instructions on how to properly use this product and how to set the combination as well as a video showing the item more in depth. The cylinder that...
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  • Can an Order for Multiple Tow Ready Locks Be Keyed the Same
  • Many of the lock products we offer can be ordered in multiples that are keyed alike and some of the Tow Ready brand locks are among these. The link at right will take you to our main page for locks that can be keyed alike. These include both surround locks like # ML389DAT and latch locks like the DeadBolt # 28012. You can use the filters on the linked page to select the type of locks you need - gooseneck, lunette ring, standard coupler, etc. Once you select the product you want you...
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  • How Does the Master Lock 5th Wheel Trailer King Pin Lock Install on a Trailer King Pin
  • The Master Lock king pin lock # 2999DAT simply goes around the thinner part of the 5th wheel trailer king pin. Then you put the pin through and push on the lock. Take the look at the picture I have included to see how it installs. I have also incldued a link to all the king pin locks that we carry.
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  • Can the Master Lock Trailer Coupler Lock # 377DAT be Rekeyed
  • The Master Lock Coupler Lock, # 377DAT, is not rekeyable. Master Lock does not offer replacement lock cores for this particular lock. If you know the key number that was stamped on the original keys, you can order replacement keys using the Replacement Key for Master Lock Coupler Locks, # MLK1. If you do not have the original keys and the lock is stuck on your trailer, you can drill out the lock core to remove the lock, but you would need a new coupler lock to secure the trailer. If...
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  • How to Reset Combination on Master Lock Trigger Lock 94DSPT
  • To reset the combination on the Master Lock trigger lock 94DSPT follow these 5 steps: First, open the lock by pulling apart the two sides of the lock and completely removing from the gun. Then, push the lever into the down position. Next, with dials set to the current combination, use a pen point or similar narrow object, press the reset button on the left side of the lock in toward the center of the lock. After that, continue to apply pressure to the reset button, and set the...
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