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Master Lock Trailer Hitch Locks
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  • 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




Master Lock Reviews and Installation Videos

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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 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...
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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 Fastway Universal Trailer Coupler Lock, # DT25013KA. 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 16 inch...
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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 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. The Master Lock Coupler Lock, part # 378DAT, you referenced will only fit couplers for a 2-5/16...
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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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  • 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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  • 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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  • 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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  • 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 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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  • 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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  • 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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  • Coupler Lock With 1/4 Inch Diameter Pin Recommendation
  • For our hitch receivers, we offer hitch receiver locks that have either 1/2 inch or 5/8 inch diameter pins. Depending on what you intend to use the locking pin for we do have other options available. We carry locking coupler pins that may work for you. The first lock I recommend is the Master Lock Adjustable Trailer Coupler Lock, part # 2847DAT. This is a 1/4 inch diameter pin that has a keyed lock and is adjustable to fit lengths of 5/8 inch, 1 inch, and 2 inch. Another coupler lock...
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  • Recommended Keyed Alike Trailer Coupler Locks For Multiple Trailer Application
  • For your keyed alike trailer couplers, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers, # DT25013KA. This lock secures your coupler from the top and bottom. It is a noticeable theft deterant and it has a tube key lock cylinder to provide better security. It has an anti-drill pin and bolt blocked locking system prevents prying open the lock. Fastway has been shown to work on the most different styles of couplers. Other options for keyed alike...
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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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  • 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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  • 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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  • 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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  • 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 Correct Frozen Hitch Lock 1480DAT That Will Not Open
  • After a long period in place a lock mechanism can stick and make it tough to get the key in it, or to get the inserted key to turn. There are a few suggestions I can offer to you to get your lock # 1480DAT open. You can spray a bit of aerosol white lithium grease into the lock. Do not use powdered graphite as it will eventually harden. A small amount can also be applied to the key before it is inserted. The keys themselves sometimes will benefit from a bit of fine (500 grit) sandpaper...
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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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  • Which Coupler Lock Set is Best for Use with Atwood Trailer Coupler 81911
  • The Atwood Trailer Coupler 81911 that you have on your A-frame trailer can be locked in two ways, by securing the latch and by blocking entry of a hitch ball. The latch mechanism on the top can be locked with an item like the Dead Bolt # 7690. (This latch lock is one of the two locks included in part # 7685, which is our reference for the CT Johnson part RHC32.) But please note that this latch lock has a center span of only 1/2-inch; the coupler latch on your # 81911 requires a latch...
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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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  • Will Master Lock Cable Lock # 8255DAT-56 Fit Swivel Head Trailer Hitch Receiver Lock # 2866DAT
  • Yes, you can use both Master Lock lock sets together. The hitch pins included with lock set # 2866DAT fit the lock that comes with Adjustable cable lock # 8255DAT-56 and the cables included with the cable lock fit the lock in the hitch lock set.
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  • Recommended Trailer Locks for Rented U-Haul Trailers to Secure When Connected and Disconnected
  • Since 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.
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  • Locking Hitch Pin Recommendation for a 2015 Ram 2500 with 2-1/2 inch Hitch
  • The span or usable portion of the Masterlock Hitch Lock part # 1469DAT that you referenced is 3-1/4 inches. If you need only 3-1/8 inches this lock would work well for you. Check out the review video I attached as well.
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  • Recommended Winch To Pull A 2000 lb Pontoon Boat Up A 45 Degree Incline Transitioning To 30 Degrees
  • For this application, I reached out to my contact at Bulldog Winch and we came up with what we believe is what you will need based on the information you gave me. There are many factors involved here, so we are trying to cover all the bases for you and make it easy. I will give you our recommendation for using the oak tree to mount the winch, and using the 4x4 truck to power it. I recommend the Bulldog Winch Standard Series Off-Road Winch - Wire Rope - Roller Fairlead - 8,000 lbs,...
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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. Any wireless...
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