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Expert Answers about Chevrolet Trailer Coupler Locks


  • Recommendation for a Coupler Lock Compatible to the Demco Channel Tongue Trailer Coupler
  • For your Demco Channel Tongue Trailer Coupler for 2 Inch ball, # DM12717, I recommend the Master Lock 1-7/8, 2, and 2-5/16 Inch Trailer coupler Lock, # 377DAT. Unlike the Fastway Universal Trailer Coupler Lock, like # DT25013, the Master Lock coupler lock will fit up into the trailer coupler and uses a sliding lock that secures over the Demco coupler lip. The Master Lock trailer coupler lock is nickel-plated die-cast zinc that will resist rust and corrosion.
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  • Recommended Trailer Coupler Lock For 5 Wide Coupler
  • The surround-type trailer coupler locks can only fit couplers that have a maximum width of 4-1/2". For a 5" wide coupler you will need to use a latch lock such as the Master Lock Trigger Style Coupler Lock for 1-7/8" and 2" Couplers # 605DAT or Trailer Coupler Lock # e98886
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  • Trailer Lock Recommendation for Gooseneck Trailer with Atwood Coupler
  • Since the Atwood AMPlock gooseneck coupler locks are no longer around your best option for a coupler lock will be a wheel lock to lock the trailer like the etrailer.com wheel lock part # 288-02020. This locks the trailer just as effectively as a coupler lock but is universal enough to fit basically any trailer out there or vehicle. It's the best solution for gooseneck trailers like yours where there isn't a coupler lock that fits the coupler.
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  • Recommendation for a Trailer Coupler Lock that Will Fit a 4 Inch Wide Trailer Coupler
  • I spoke with my contact at Master Lock about the Trailer Coupler Lock # 3784DAT. They were not certain if the lock is compatible with a 4-inch-wide coupler. But I am certain that the Fastway Universal Trailer Coupler Lock, # FA86-0015-318 Trailer Coupler Lock will work for you.
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  • Replacement for Atwood AMPlock Trailer Coupler Lock Part AT89004
  • The Atwood AMPlock Trailer Coupler Lock part AT89004 which is for overslung couplers (coupler on top of frame) has been discontinued by the manufacturer as with a lot of Atwood products as they are no longer in business. The Atwood AMPlock Underslung Coupler Lock part # AT89006 which is for underslung couplers (coupler on bottom of frame) is only available while supplies lasts and has also been discontinued by the manufacturer. That said, you do not need to use an Atwood coupler lock if...
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  • Coupler Lock Recommendations for a RAM Brand Trailer
  • If your RAM brand trailer has a collar-lock style coupler like the Bulldog Coupler # BD028444 yes the EZ Lock Trailer Coupler Lock # BLTL-20-40D would be an excellent choice as a trailer lock. A more universal coupler lock that we offer is the Fastway Coupler Lock part # FA86-0015-318. I attached review videos for both coupler locks for you to check out.
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  • Recommended Coupler Lock For a 2-5/16" Trailer Coupler
  • I prefer to use the Master Lock Universal Trailer Coupler Lock # 379DAT as it works with a wide variety of trailer ball couplers from 1-7/8" to 2-5/16". We have the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT that includes this same coupler lock along with a coupler latch lock and receiver lock that are all keyed alike.
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  • Comparing Different Types of Coupler Locks
  • We have a variety of locks for your coupler, each with their own applications. If you have a fat lip coupler, I recommend the etrailer Trailer Coupler Lock - Flat Lip, part # e98897. This yellow lock can fit a 2" coupler and is an immediate deterrent as the color quickly grabs attention. The lock has a stem that reaches into the coupler and can't be wiggled free. If you don't have a fat lip coupler but still want a lock that reaches into the coupler, I recommend the EZ Lock Trailer Coupler...
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  • Recommended Coupler Lock For Adjustable Ball Coupler
  • The HITCH-LOCK Trailer Guard Coupler Lock by Dutton-Lainson # DL13980 is a great option for both keeping your trailer coupler locked in place and deterred from theft. You of course need an external padlock like the Master Lock Padlock # ML1KA for this application. If you are just looking for a lock when the trailer is not coupled, I recommend the Trailer Coupler Lock - Gorilla Guard for 2" Couplers # 63228 or # 63227 in 2-5/16 inch.
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  • Recommended Adjustable Trailer Coupler Lock Set For Use With Most Trailer Couplers and Hitches
  • I recommend using the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT for securing the Couper # CA-5210-B latch. Included in this lockset is 2 receiver hitch locks for 2" and 1-1/4" receivers as well as the adjustable coupler latch, trailer storage lock and carry bag. All locks are keyed alike to make is easier than fumbling with multiple keys. The Coupler Lock # 2847DAT is if you only want the adjustable coupler lock.
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  • Recommended Keyed Alike Trailer Coupler Lock for 3 Key Matching Trailer Locks
  • The Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers # ML389DAT do not have a keyed alike feature so unfortunately I can't guarantee 3 of these keyed alike. If you are interested in a coupler lock with the keyed alike option, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-318. This is a very versatile coupler lock compatible with most styles of trailer couplers. I've attached a video to assist and you can...
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  • Recommended Keyed Alike Coupler Locks
  • 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. Other options for keyed alike couplers lockes are the Blaylock EZ Lock Trailer Coupler Lock for 2" Lipped...
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  • Recommended Coupler Lock and Padlock Compatible with Standard Travel Trailer Couplers
  • The EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20 is specifically designed for a collar lock style coupler like # BD028657. For a standard travel trailer, you most likely do not have that style coupler, so I recommend the Blaylock EZ Lock Trailer Coupler Lock for 1-7/8", 2", and 2-5/16" Couplers - Aluminum # BLTL-33 for the same style that is compatible with most travel trailer coupler styles. If you want one with a padlock included, I recommend...
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  • 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 # FA86-0015-318 or the Master Lock Coupler Lock for 1-7/8", 2", 2-5/16" Couplers # ML389DAT are both good options. The latter doesn't have any restrictions of the width of the coupler.
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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, # FA86-0015-318. This lock secures your coupler from the top and bottom. It is a noticeable theft deterrent 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. Learn more with the attached...
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  • Recommendation of Trailer Coupler Lock to Fit a Titan 2-5/16 Inch Coupler
  • The Master Lock Universal Trailer Coupler Lock, part # 379DAT, you have referenced will fit a 2-5/16 inch trailer coupler. I also have the Master Lock Trailer Couple Lock, part # ML389DAT, which is the similar surround lock that goes over the front of the coupler. It has a bright red powder coat to visually deter theft as an added feature. Another coupler lock that is one of our top sellers is the Fastway Universal Trailer Coupler Lock, part # FA86-0015-318. We have gotten good reviews...
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  • Coupler Lock for Bulldog Collar Lok Coupler to Lock the Coupler to a Trailer
  • For your Bulldog coupler you would have to use the Trailer Coupler Lock, part # 28012. This is a coupler lock with an inside width of 3-3/8 inches. I pulled the Bulldog coupler from our warehouse and measured the size of the lock pin that goes in the coupler. It measured 5/16 inch diameter and a length of 2-3/4 inches. I tried the lock in the coupler and it fit and did keep the collar lock from opening. See the picture to the right that will show it installed on a similar coupler.
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  • Trailer Coupler Lock Solution for Coupler that is 4-5/8 inches Wide
  • It looks like would need to get a latch coupler lock like a Master Lock Adjustable Trailer Coupler Lock - Stainless Steel, part # 2847DAT, for your trailer that has a flange width of 4-5/8 inches. I attached a link to a review video of this coupler lock for you to check out. We do not have a surround coupler lock that will be wide enough to fit on a coupler that has a distance of your trailer.
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  • Is There A Universal Coupler Lock That Can Be Keyed Alike
  • Great question. EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20-40D. We are unable to key alike the locks that come with the EZ lock trailer coupler. However, we can key alike the fastway trailer coupler. To do so you will select key alike from the drop down menu the select how many you would like to purchase. It is that easy. Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-318.
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  • Locks for A-Frame Trailer Coupler
  • We have all sort of trailer locks including coupler locks for a-frame trailer couplers. Please refer to the linked page that displays all standard coupler locks. You can use a universal-fit surround-type lock such as # ML389DAT which fits all ball sizes and that prevents someone from hitching to your trailer by clocking access to the coupler, or a simple latch type lock like # e98889 that prevents the coupler latch (like the one on # CA-5400-B) from being lifted to unlock the coupler.
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