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Trailer Coupler Lock - Butterfly Style

Trailer Coupler Lock - Butterfly Style

Item # 3008

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Trailer Coupler Locks

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Shipping Weight: 0.42 lbs

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3008 - 3/4 Inch Span Tow Ready Trailer Coupler Locks
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Product Images

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  • Latch Lock
  • Tow Ready
  • Keyed Unique
  • Universal Application Lock
  • 3/4 Inch Span
Lowest Prices for the best trailer coupler locks from Tow Ready. Trailer Coupler Lock - Butterfly Style part number 3008 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (54)
  • Q & A (13)
  • Videos (1)
  • Photos
  • Why etrailer?

Tow Ready Trailer Coupler Locks - 3008


Butterfly style trailer coupler lock. Works with most straight tongue style couplers. Includes two keys.

  • 1/4" pin diameter
  • Spans 3/4"


Tow Ready by Draw-Tite, Hidden Hitch and Reese # 63225






California residents: click here


Video of Trailer Coupler Lock - Butterfly Style


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Tow Ready Trailer Coupler Locks - Latch Lock - 3008 Review

Well show you the operation of the lock, its pretty easy. The key goes in and it works like a screwdriver. It just unscrews like so, then we can put it on our coupler. You put this through the lock hole on the coupler, which is typical of these latch style couplers. It just goes through then screw it together with the key, back it off a little bit with a turn. There you have it, locked into place and on the ball. Thats part # 63225 or #3008, the Tow Ready coupler lock.


Customer Reviews

Trailer Coupler Lock - Butterfly Style - 3008

Average Customer Rating:  4.5 out of 5 stars   (54 Customer Reviews)


- 3008
by:

Great product. Fantastic turnaround ti me. 149325



- 3008
by:

Great lock, works awesome with my trail er. 45767



- 3008
by:

Looks like a good, little lock. 375510



- 3008
by:

It locks up the trailer. It seems that it would be hard to cut off. 334713



- 3008
by:

Exactly what I was looking for and at the best price around. Just wish you could pick what key number you get, so all of our trailers could be keyed the same. 282437



- 3008
by:

Works as promised. Thanks. 336700



- 3008
by:

Fast, secure, FREE shipping. Great product, I would highly recommend it as well as buying from etrailer.com, they provide great communication and great prices. 56880



- 3008
by:

Ordered 3 of these little locks - Exactly what I needed to secure my 3 trailers when stored or attached to my truck - Perfect fit - Easy to use and adds that extra little bit of security to discourage theft - 5 Stars 428271



- 3008
by:

I owned a Fulton butterfly lock that served me well for 25+ years which finally gave out. Right out of the package I was somewhat disappointed with your product as the keys are not brass as the photo depicts and the lock's color appears to be painted. Time will tell if it the performance meets my expectations. Thank you. 543532



- 3008
by:

This was a small disappointment in my order. When using the lock the first time, I noticed the pin was not fully seated in the lock. Basically the pin is supposed to be seated and permanently set in one side of the unit. As you turn the key the pin travels with that half of the lock. I had to pound the pin into the hole. Now the lock works as advertised. I think it will work fine on the trailer. I won't have to return the lock. That being said, if security is paramount to you, this is not high security. This is more of just a deterrent. 177479



- 3008
by:

The lock is exactly as described. It does not fully close on my 2 5/16 ball hitch latch but works. It was noted that it was for the smaller hitches and I took a chance. I will work great on my small trailer. 353624



- 3008
by:

This lock was purchased to lock the load bearing pin on a Bulldog BX-1 gooseneck tube (the tube portion, not the coupler itself, since my entire tube was stolen). There is not a locking pin manufactured to Bulldog's knowledge that suits these needs. Standard coupler locks are 1/4" shank usually, and the end of the load bearing pin has a .20" hole for the retainer pin. Bulldog sees no reason why it couldn't be drilled out to support a 1/4" coupler lock that will fit on the end of the 3/4" diameter load pin. I have not yet performed this action but will upload pics when complete. May even get a 5th star if all goes well. 455173



- 3008
by:

Well I haven't been able to use them yet. I opened them up to try them and 1 wouldn't turn to open up. I still haven't used them yet. 1 worked fine and the other was turned to far and when it arrived it wouldn't turn at all. I sprayed it with WD-40, and nothing. 609785



- 3008
by:

Year later still works great for locking gooseneck hitch and pins. One key showed up broken, oddly but no matter. I Love etrailer. Going to get more for the latches that slide over a pin hole like on the back of cargo trailers at the ramp. These ride upright so they don't slam up against the trailer. 588672



- 3008
by:

Looks to be of very good quality. I recommend it. 581386



- 3008
by:

As expected. 569682



- 3008
by:

Exactly as described. Good value. 549439



- 3008
by:

Received product. -- looks good 542342



- 3008
by:

Product works as described and is good quality 510969



- 3008
by:

Simple, effective, good for the price 462900



- 3008
by:

Purchased a Drop-Tail Trailer without a Trailer Jack. etrailer recommended the products, mailed them FREE & got everytrhing in TWO DAYS. Installed without any issues. Highly Recommend!! 454119



- 3008
by:

The hitch lock is a simple and effective way to secure your trailer to your tow vehicle. 398416



- 3008
by:

Exactly what I ordered came in time 364075



- 3008
by:

All items were received within three business days of placing the order and were easily tracked from the tracking site etrailer sent. They were packed well and received in great condition. Thank you for the great customer support and speed of delivery. I will use etrailer for my future needs. 360785



- 3008
by:

My item came in quickly, and it was a good price. 348002



- 3008
by:

good piece of mind for a cheap price! 331837



- 3008
by:

Had this for a year now, still looks new. Great product. Would buy again. 318769



- 3008
by:

Exactly what I ordered. Fast delivery definitely use etrailer again 309129



- 3008
by:

All the products I ordered were top notch and the people I delt with on the phone were supper nice and very helpful 308791



- 3008
by:

You can always count on great service with e trailer 254889



- 3008
by:

Works good, excellent for the price. 216009



- 3008
by:

Product arrived quickly and installed onto camper with perfect fit. Hopefully will last many years exposed to elements. 200759



- 3008
by:

I am happy with the lock. Tks 194448



- 3008
by:

THANKS GOOD PRICE 193677



- 3008
by:

the product was exactly as advertised and in perfect condition and shipped incredibly fast and arrived in great packaging. 167064



- 3008
by:

Haven`t used it yet. Made in china and is poorly made. It takes a lot of work to get the keys to fit and make it open. 152591



- 3008
by:

Used similar product before. Easy to use and reliable 152083



- 3008
by:

Looks good, works well, as described 134286



- 3008
by:

Will work to secure coupler latch. 115109



- 3008
by:

The item was just as describes on the website. It arrived very quickly in 2 days . The whole transaction was smooth and handled very quickly 108826



- 3008
by:

Great lock and we used it this past weekend. Very easy to use and worked as advertised. eTrailer continues to provide great products at reasonable prices! 105360



- 3008
by:

Ive used these in the past and they work great. They are made a bit cheaper these days but what isnt. This will lock the coupler to the ball... but you will still have to lock the drawbar to the receiver with a locking pin, or remove the drawbar. Anyway... a great concept and easiest way to protect theft. 96435



- 3008
by:

Received products quicker than I thought possible. The follow up throughout the process was stupendous 95680



- 3008
by:

I use it on a trailer hitch ,looks stro ng, 94836



- 3008
by:

I receivced my trailer's lock in about 5 days and it was very easy to install. It look's good and stronge and looking forward to see how it proforms in the long run. 90772



- 3008
by:

Excellent product - this my second one, have used the 1st one for years without any problems! This one goes on my other boat trailer - staying with what works !!! 88147



- 3008
by:

Tight fit. Took a moment to figure out that the key actually screws apart the lock. Tight fit so would be tough to cut. If it stays clean should be good, but if it gets gritty, it may be difficult to unscrew. 72968



- 3008
by:

Unknown qualty until tested. 59964



- 3008
by:

OK LOCK NOT VERY HEAVY BUT WILL SERVE THE PURPOSE NEEDED 59959



- 3008
by:

Excellent Product ...Great Price... Super Fast Shipping Thanks 41311


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Show More Reviews

Ask the Experts about this Tow Ready Trailer Coupler Locks
Do you have a question about this Trailer Coupler Lock?


  • Recommended Lock for Underslung Coupler on 2018 Jayco Trailer
  • Your new 2018 Jayco trailer has a bottom mount or underslung coupler. For a lock that will work well, I recommend the Atwood AMPlock Underslung Coupler Lock # AT89006. This cast iron lock is designed specifically for underslung couplers and will help deter theft by blocking the ball socket and the surrounding flat lip. It features a rotating-disc-tumbler lock that provides maximum security with nearly a million possible key codes. It will fit flat-lipped couplers for 2-5/16 inch balls with...
    view full answer...

  • Trailer Coupler Lock for a Coupler with Large Lip
  • You can use Master Lock # ML389DAT for coupler # CTA-280. Another option is to use a latch lock so that the latch cannot be opened. Most latches, if they can accept a lock, will take a 1/4 diameter pin such as # 28012 or # 3008.
    view full answer...

  • Coupler Lock for an Atwood Bottom Mount Trailer Coupler
  • You have a bottom mount coupler sometimes called an underslung coupler. The coupler lock we recommend for this type of coupler is # 3008. It actually locks the latch in place and will not allow it to open to fit a ball inside. The Master Lock coupler lock # 3784DAT is not likely to fit due to the design of the coupler.
    view full answer...

  • Replacement Keys for Blockhead Coupler Lock and Butterfly Latch Lock
  • We do offer a way to get replacement keys for your DeadBolt BLOCKHEAD Coupler Lock # TCL1 and other Blockhead models. What you need is # CTJKEY. On the product page you will need to enter the key number you have and you would be good to go. Your other lock appears to be a butterfly lock # 3008. If the originals were flat and gold then you will need # CKEY-FG. Again you will enter the key number on the product page. If you do not have the key numbers and it is not indicated on the...
    view full answer...

  • Will a 7-Way Round to 6-Way Adapter Work with a Semi Tractor
  • A 7-way round pin on a semi tractor normally has different functions than a 7-Way round pole found on something like an RV. I have included a picture showing what the functions are on the 7-Way part of the adapter. If this matches what your semi tractor has then it will work properly. If your 7-Way has different functions, which you can check by using a circuit tester such as # 3008, then you will need to re-wire the 7-Way to match the adapter or install a different 7-Way that will match.
    view full answer...

  • Does Master Lock Heavy-Duty Coupler and Latch Lock Combo # 3784DAT Fit a 2 Inch Coupler
  • That's interesting, because Master Lock coupler lock # 3784DAT does indeed fit a 1-7/8 inch. 2 inch, and 2-5/16 inch coupler. Even the instructions from their site show it fitting a 1-7/8 and 2-5/16 inch coupler. They don't show the 2 inch because it does not require any special steps (there is a little insert, included, that has to be on for 1-7/8 inch and UFP couplers but removed otherwise). But this may not be the best option for coupler # BD43805W0317. It doesn't have a flange...
    view full answer...

  • Availability of Keyed Alike Coupler Locks
  • The Butterfly Style Trailer Coupler Lock, item # 3808, is not available at this time keyed alike. We have several keyed alike coupler locks that may work for you. Item # RC6 and # RC6SS, have a 7/8 inch span and item # 7690 and RC2ss have a 1/2 inch span for attachment to the trailers coupler.
    view full answer...

  • Replacement Lock for Snowbear Trailer Coupler
  • The Pin and Clip For Class 3, 4 and 5 Trailer Hitch Receivers, item # PC3, is the pin needed to install a ball mount in a Class 3 or larger 2 inch receiver. I checked out the Snowbear trailer website and saw that the majority of their trailers have a standard 2 inch ball coupler. We have coupler locks that will fit this style of trailer coupler. The Curt Coupler Safety Pin, 1/4 inch, item # K-8P, is a no frills safety pin that will get the job done and if you want a measure of security...
    view full answer...

  • Replacement Key for Tow Ready Butterfly Style Trailer Coupler Lock 3008
  • You can use replacement key # CKEY-FG for your Tow Ready coupler lock # 3008. As long as the keys you have do not start with the letters AG, AZ, or H you can use this part. Once you click the add to cart button you will be able to enter your existing key number. If you do have a key that we cannot replace then I recommend taking the key to an actual locksmith who should be able to make a copy.
    view full answer...

  • Coupler Lock to Protect a Boat Trailer Both at Home and at the Boat Ramp
  • What you could use is the HITCH-LOCK, # DL13980. With the plate angled up, the trailer is protected from someone trying to hitch up to it. When towing a trailer with the plate angled down, it prevents someone from removing the hitch ball already in the coupler. It can be used with the trailer hooked up or not. You will need to use a pad lock like # 37DAT with this HITCH-LOCK. It is also zinc plated for corrosion resistance so it would be good for a boat trailer. For a lock that can be...
    view full answer...

  • Replacement Keys for Fulton Butterfly-Style Coupler Lock
  • Sorry to hear about you losing your keys like that! Been there, done that! We can indeed get you replacement keys. To get a replacement for each key, click the provided link for part # CKEY-FG. In the box on the page you're taken to, type in the key number which in your case is 101 and 115. You'll do one key at a time, inputting the first key number into the box, and clicking 'add to cart' and then repeating the process for the second key. You can see current pricing on the product page...
    view full answer...

  • Recommended Trailer Coupler Lock for a 2018 Keystone Passport 2520RL
  • The majority of the butterfly coupler locks like part # 3008 have a 3/4" wide span. If the butterfly coupler lock that you previously used was too tight then chances are this one will be too tight as well. I recommend using a straight pin style lock like part # RC6 which has a 7/8" span with a 1/4" diameter pin. This coupler lock can also be keyed alike to a trailer hitch lock like part # 7683 if both were ordered at the same time. I have attached a review video of the coupler lock...
    view full answer...

  • Recommended Trigger Lock Replacement Keys or Keyed Alike Options
  • The Trailer Coupler Lock - Butterfly Style # 3008 do not have specific key blanks available or a keyed alike option. You would need to simply have a similar key blank cut for replacement or spare keys. If you are wanting the trigger latch lock to be keyed alike, we don't have the butterfly style option, but I instead recommend the 7/8 inch span # RC6 or the 1/2 inch span # RC2SS.
    view full answer...


Do you have a question about this Trailer Coupler Lock?




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Info for this part was:

Expert Research:
Michael L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Adam R
Updated by:
Laura H
Updated by:
Alexander C

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