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  1. Trailer Coupler Locks
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  3. Latch Lock
  4. Keyed Alike
  5. 3-3/8 Inch Span
  6. Universal Application Lock
etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome

etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome

Item # e98888
Our Price: $20.75
You Save: 48%
Trailer Coupler Locks
Shipping Weight: 0.55 lbs
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Designed primarily for brake actuators that lock through the body, this lock has a covered keyhole and chrome plating to help prevent corrosion. Steel construction ensures long-lasting dependability. Can be keyed alike to match other etrailer locks. Great Prices for the best trailer coupler locks from etrailer. etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome part number e98888 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (295)
  • Q & A (0)
  • Photos

etrailer Trailer Coupler Locks - e98888

  • Latch Lock
  • Keyed Alike
  • 3-3/8 Inch Span
  • etrailer
  • Universal Application Lock

Designed primarily for brake actuators that lock through the body, this lock has a covered keyhole and chrome plating to help prevent corrosion. Steel construction ensures long-lasting dependability. Can be keyed alike to match other etrailer locks.


  • Coupler lock secures the ball coupler of your trailer brake actuator to deter theft
    • Trailer can't be removed from your tow vehicle when locked onto ball
    • Would-be thieves can't secure your unhitched trailer to their tow vehicle with the coupler locked either
  • Large span is ideal for trailer brake actuators that fit 2-5/16" balls
  • Tamper-resistant design
    • Conical shaped housing ensures tight fit against coupler latch
    • Pick-proof screw-and-lock mechanism provides security
  • Rubber end and textured lock core make it easy to grip lock
  • Plastic cap covers key slot to help prevent internal corrosion
  • Sturdy steel construction
  • Chrome finish resists rust and corrosion
  • 2 Reversible, automotive-style keys included
  • Locks can be keyed-alike to match other etrailer locks
    • Select "Keyed Alike" from drop down menu above and enter number of locks into Quantity box
  • Made in the USA


  • Application: surge brake couplers that lock through the body
  • Inside pin length (span): 3-3/8"
  • Overall length: 6-7/8"
  • Pin diameter: 1/4"
  • 1-Year warranty

etrailer Lock Compatibility


  • Lock can be keyed alike to match other etrailer locks.
  • To order keyed alike locks, select "Keyed Alike" from drop-down menu above and enter number of locks in Quantity box.

e98888 etrailer Trailer Coupler Lock for Surge Brake Couplers with 3-3/8" Span -Tow Ready 63213 - Rola 59104

Alternate part number: 28012

California residents: click here

Customer Satisfaction Score:

Customer Reviews

etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome - e98888

Average Customer Rating:  4.7 out of 5 stars   (295 Customer Reviews)

Designed primarily for brake actuators that lock through the body, this lock has a covered keyhole and chrome plating to help prevent corrosion. Steel construction ensures long-lasting dependability. Can be keyed alike to match other etrailer locks.


Great Product! We ordered 6 of these for our fleet of trailers. Very convenient with all the same key. Also purchased the matching coupler locks.
We are very happy with both the products AND customer service at etrailer. They are our first and only call for trailer supplies.


These seem to be made well. Yet to be seen how they hold up over time. Having several trailers, the keyed alike feature was important to me and I was able to order the lengths I needed for the various coupler types. I saw some reviews indicating that the operation of these was slow or tedious. I found that insert the key, hold the key and spin the black end was simple and quick.



These are working well about a year later. Happy with them


I ordered this lock and an etrailer branded coupler lock as etrailer’s website says it can be keyed alike to any other etrailer branded lock. I required them to be keyed alike. I received two locks that were keyed differently. There were extra lock cores in the box like someone was going to change them out, but shipped them without doing so. I followed up with customer service to inquire as to why and was told that these locks can only be keyed alike to the same type of lock, not other locks. I was then told they would send the correct replacement lock. Then was told that was not possible. I requested to return my order for a refund as the website was very unclear as to what locks could be keyed alike. I received a refund for less than the cost of one of the locks. Worst experience with etrailer ever. I won’t be buying from them again.





everything is still working great after a year of use.


Perfect for the Demco EzLatch on my utility trailer. Very easy to use and provides the security for my trailer that I sought.

The D.


Works very well, and as intended. Adds a sense of real security & safety.


Does what it is supposed to. Not sure how easy it would be to snip or cut through, but I use it as a component of my security on a lightweight teardrop


I was sent a follow up email asking how I liked the lock, and I have to say that I liked it enough to buy it a second time after I LOST THE KEYS!!! Because losing keys in my job!!! But yes it is a great lock for my trailer, because it has an odd coupler that a pin goes completely through it and you can’t use a standard padlock or coupler lock. The coupler locks sold at local stores were not long enough to go through the coupler, so I has to search the internet and I found this at and it works! I would definitely recommend this lock if you have this style of coupler.


Good value since the coupler lock works exactly as intended. Best part - even tho outside year around in Seattle weather, no corrosion since chrome plating more than adequate. Works on both electric and surge brake couplers with thru-body locks requiring extra length (span).


I received the coupler lock. My coworker joked "That will only stop a honest man" You could cur this off with a hack saw in thirty seconds.


Thank You etrailer! Coupler lock would not work Called and explained that the lock would not open? I received on three days later and has worked fine since. Great service!!! My number 1 go too!!!


I drive in all sorts of weather, still looks and works like it did when it was new after 1 year.


Great product and I was able to get it to match the key on my other trailer lock


I was needing a pin lock designed like there is nothing was hanging down to catch my hitch. Works perfect.


This is my second set (the first set is still working and on a different truck)


This steel lock mechanism will only keep an honest person away. I hit the lock with a hammer and it cracked off, rendering it useless. The key loxk has to be spun on, so if you keep the rubber protector in place its a pain to screw on with the key inserted. Get a reL trailer lock that goes in the ball mechanism. Do not wastevyoyr money on this styleock it is useless against and criminal intetent.

Etrailer Expert

Sierra K.


Any lock can be tampered with until it fails. Item # BLTL-50-40D would be a good option for you.


Great product well made and works perfe ctly


Works Great.....


The lock is ok, but you have to unscrew the end to open it I would rather have a one turn of the key and it’s open. I will go ahead and use this one since it’s what I ordered.


Exactly what we wanted!


Great product! I bought this coupler lock to replace others that kept bending while pulling my boat. After a year and fishing about once a week, pulling over mountains, and having to hit the brakes hard a couple of times, this coupler has held up superbly! etrailer is my go to place for all trailer products, great selection of products, super description of their products, often with video link, fantastic service and very competitive prices!

Edward B.


Super! Works as good today as the day I receivedit!


As described, perfect fit and looks good. Quick ship as well. Thank you!!


It seems like it will do the job.


A great locking system. I've tried many different ones before and this is the best I've found. Also reasonably priced and quality built.



This product is awesome. Would only buy this one when I need another lock for another trailer.


Durable and easy to operate


I have broken 2 locking coupler locking pins due to tongue moving forward with surge brakes. This product is not an ideal solution as you need to spin on and off with the key to lock and unlock the pin. Turning a key 10-15 times to screw in and out is a pain. This will be a back up at best to some other solution I am still seeking.

Etrailer Expert

Sierra K.


You may like this product better as it is just one turn of a barrel key which makes it a little easier: Item # MT76FR.

Show More Reviews

See what our Experts say about this etrailer Trailer Coupler Locks

  • Availability of Longer Hitch Pin Lock for Master Tow Dolly
    Sounds like you need a longer hitch pin like the part # e98888 which is a 1/4 inch diameter pin lock that is 3-3/8 inches in length.
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  • Will Trailer Coupler Lock # e98888 Secure Boatmate Trailer with Surge Brakes
    We do have a locking hitch pin that may work very well for you. I recommend our Coupler Lock, part # e98888. This is a 1/4 inch diameter pin that has a 3-3/8 inch span. This lock has a covered key slot that will help prevent corrosion. I have attached a product review video you can check out.
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  • Recommended Hitch Pin Lock For UFP A-60 Coupler
    The coupler lock I recommend for your UFP A-60 Coupler is the Coupler Lock, part # e98888. Since the coupler measures 3-inches wide and the pin hole is 1/4 inch diameter the # 28012 will work great to secure the coupler. The lock has a covered key slot to keep dirt and helps prevent corrosion. This is a keyed-alike item so if you want more than one lock and need them all to use the same key you can use the drop-down box on the product page when ordering.
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  • Recommended Lock for Demco Easy Latch and a Demco Adjustable Channel Coupler
    The etrailer Surge Brake Coupler Lock part # e98888 can be used to lock both a Demco Easy Latch and a Demco Adjustable Channel coupler. If you order them both at the same time and select the "keyed alike" option, they both come with the same lock/key. I like the pin style locks personally as you can not only use them when the trailer is not in use but also while the trailer is in use as an extra measure of security while towing.
    view full answer...
  • Coupler Lock for Titan Aero 7500 Actuator Coupler
    You will need to use a coupler lock in place of the included pin in the handle of actuator T4606500 to lock it. Latch lock # e98888 will work. It has a 3-3/8 inch span. Once inserted and locked the handle would not be able to be pulled up to release the trailer from the ball on the tow vehicle.
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  • Pin Lock To Secure Bulldog Collar Lok Coupler to Hitch Ball
    Which specific Bulldog coupler do you have? Does it have a latch with a pin in it by chance?
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  • Difference Between Keyed Alike and Keyed Unique on DeadBolt Coupler Lock
    When looking at our Coupler Lock # e98888, or any of our locks, "Keyed Unique" means that each of the locks you purchase (if you purchase more than one) will use a different key. If you select "Keyed Alike" instead, each of the locks you purchase (again if purchasing more than one) will use the same key, making it much easier to keep track of if you have multiple trailers. If you are just purchasing one unit then it does not matter which option you choose (although...
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  • Trailer Coupler Lock e98888 Material
    The Trailer Coupler Lock # e98888 is made from stainless steel. I attached a review video link for this for you to check out as well.
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  • Locking Pin for Brake Actuator Coupler
    You have a couple of good options. You can use our Coupler Lock, part # e98888, through the latching mechanism on the top of your coupler. This has a wide width so it will clear the sides.
    view full answer...
  • Trailer Coupler Lock with Pin Length of At Least 3 Inches
    The closest option we have available to what you are seeking is our Coupler Lock # e98888. This coupler lock does feature a 3-3/8 inch usable span but the pin itself has a 1/4 inch diameter. This diameter is just a tad smaller than what you are looking for but it will still work on your coupler to either lock the trailer to the hitch ball when you're towing or to help deter theft when the trailer's left unattended. I have attached a short video review that you can check out...
    view full answer...
  • Can Brand e98888 Surge Coupler Lock Be Keyed Alike With Previously Purchased Lock
    It is possible to get the # e98888 lock keyed alike to the lock you previously purchased from us, but you'd need to place your order by phone with one of our Customer Service folks. You can reach them at 800-298-8924. I've linked to a product demonstration video featuring the # e98888 lock you mentioned.
    view full answer...
  • Availability of Hitch Lock for Titan Aero Actuator
    For Titan Aero actuators like the 6000 model you mentioned we have hitch locks like the part # e98888 that would work great.
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  • Recommended Lock For Demco EZ-Latch Coupler With 2-5/16" Ball
    For a Demco EZ-Latch coupler with a 2-5/16" ball I recommend using the Surge Brake Coupler Lock # e98888. The # e98888 is not only the right size but also has a pick-proof lock mechanism as well as a really handy rubbered end which makes it much easier to grip for when you take it on and off. So this lock will give you the benefit of both security and ease of use.
    view full answer...
  • Dimensions of etrailer Lock for Surge Brake Trailer Couplers
    The Lock for Surge Brake Trailer Couplers, part # e98888, should work for your trailer hitch. This product has a center span of 3-3/8 inches and a pin diameter of 1/4-inch. The center span is the space between the two black end pieces. Since you need 3 inches of pin length this part should work just fine as it provides 3-3/8 inches. It has an overall tip-to-tip length of 6-3/4 inches. This part is available in keyed-alike multiples if required.
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  • Recommended Coupler Lock For Trailer With A 3" Span
    We have exactly what you are looking for. I recommend the etrailer Surge Brake Coupler Lock # e98888 which has a 3-3/8" span which will work perfectly to lock your coupler when it is attached to a hitch ball, or even when it is not. The # e98888 has a chrome finish making it corrosion resistant, and the tamper proof design will keep your trailer secure. I included a video of the # e98888 for you to take a look at.
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  • Recommended 1/4 Inch Locking Pin To Replace Detent Pin
    I am not sure what application you are using the detent pin for. Typically they are used on something like an umbrella or can be found on some bike or ski racks. We do not offer locking detent pins but we do have locking pins that may work well for you. One lock I recommend is part # e98888. This is a 1/4 double chrome finish and has a protective cap on the locking porting to keep dirt and moisture out. The pin on this lock is 3-3/8 inches long. For a lock that has a 2 inch span and...
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  • Recommendation for Coupler and Trailer Hitch Locks Keyed Alike
    I have great news! Both the Coupler Lock # e98888 and Hitch Receiver Lock # e98881 that you referenced can be keyed alike. Since these locks are from the same manufacturer, as long as you select "Keyed Alike" on the drop-down menu for both products and purchase all your locks at the same time, they will all come to you keyed alike to each other so you can operate all of them with a single key. I have attached a couple short video demonstrations on these locks that you can...
    view full answer...
  • Lock Recommendation for Titan Aero 7500 Coupler
    For a pin style lock to lock the Titan Aero 7500 coupler part # T4839000 that you referenced you would want the part # e98888 which will fit and work well.
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  • Coupler Lock that Fits Bulldog Collar Lok Coupler
    For locking a Bulldog Collar Lok coupler like the # BD028386 we have the part # e98888 which will work well to prevent the collar from sliding back.
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  • Can Bulldog Collar -Lok Couplers be Locked While Towing the Trailer
    Towing coupler locks, as they are called, are not as common as they used to be. We have numerous coupler locks but none that will work with coupler # BD028386 while the trailer is being towed. What you could do is use a latch lock such as # e98888 so that the latch cannot be opened and thus the trailer cannot be uncoupled from the ball.
    view full answer...
  • Recommended Coupler Lock For Surge Brake Actuator On Continental Boat Trailer
    I may have another option for you, but the EZ Lock Trailer Coupler Lock # BLTL-20 you were looking at is only confirmed to fit the Bulldog Collar-Lok Couplers so it will likely not work on your surge brake actuator. I looked up your Continental Model A2485B-8500 trailer and to lock the surge brake actuator you will need the etrailer Surge Brake Coupler Lock # e98888. I included a video of the # e98888 for you to take a look at.
    view full answer...
  • Coupler Lock for Bulldog Collar-Lok Coupler
    Hi. You would not have needed to make a hole in the Bulldog Collar-Lok Coupler # BD028463 to lock it, you would only need to use Trailer Coupler Lock # e98888. This lock would go through the latch where the pin is to secure your coupler.
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  • What Type of Lock Can Lock Curt Channel Mount Coupler # C25329 to Hitch Ball
    For a pin lock that fits as a replacement for the snapper pin of the Curt coupler part # C25329 that you referenced we have the lock part # e98888 which will fit and work well. This will prevent the collar from sliding back to allow the coupler to open. I attached a review video for this for you to check out as well.
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  • Recommended Trailer Coupler Locks That Can Be Keyed Alike
    I have another option for you, but the Bulldog Adjustable Coupler Lock # BD580410 you were looking at can not be ordered keyed alike. Instead I recommend going with the etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome # e98888 which will work with nearly all of the trailer couplers available, and can be keyed alike so you do not have to worry about keeping track of 4 different keys. You will just need to order all 4 at one time, and select the keyed alike option...
    view full answer...

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