1. Trailer Coupler Locks
  2. Bulldog
  3. Latch Lock
  4. Keyed Unique
  5. 3/4 Inch Span
  6. Universal Application Lock
Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome

Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome

Item # BD580404
lowest price pledge
Retail:$48.88
Our Price: $42.36
You Save: 13%
Trailer Coupler Locks
Orders above $99 qualify for Free Shipping
Shipping Weight: 1.45 lbs
Quantity: 
In Stock
Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome 3/4 Inch Span BD580404
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

Combo pack offers theft protection for your trailer with the butterfly-style coupler lock and secures a ball mount or hitch accessory with the receiver lock. Chrome-plated steel resists rust. Ball-bearing locking mechanisms provide extra security. Lowest Prices for the best trailer coupler locks from Bulldog. Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome part number BD580404 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (71)
  • Q & A (22)
  • Photos
  • Why etrailer?

Bulldog Trailer Coupler Locks - BD580404

  • Bulldog
  • Latch Lock
  • Keyed Unique
  • 3/4 Inch Span
  • Universal Application Lock
  • Steel

Combo pack offers theft protection for your trailer with the butterfly-style coupler lock and secures a ball mount or hitch accessory with the receiver lock. Chrome-plated steel resists rust. Ball-bearing locking mechanisms provide extra security.


Features:

  • Convenient set includes locks for your trailer's trigger-latch-style coupler and your 2" trailer hitch receiver
  • Coupler lock secures the trigger latch on your trailer's coupler 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
  • Flush-style hitch lock is used in place of standard pin and clip to prevent theft of ball mount or hitch-mounted accessory
    • Secure your bike rack, cargo carrier, hitch cover and more to your trailer hitch
  • Ball-bearing locking system on both locks provides maximum security and ease of use
    • Just pop the deadbolt onto the end of the pin and the lock will automatically engage
    • Grease ball-bearings periodically to ensure smooth operation
  • Solid steel pins offer superior strength and durability
  • Chrome plating resists rust
  • Plastic caps cover key slots to help prevent corrosion in the locking mechanisms
  • 2 High-security, square keys included


Specs:

  • Coupler lock:
    • Application: trigger-latch-style ball couplers
    • Inside pin length (span): approximately 3/4"
    • Pin diameter: 1/4"
  • Hitch receiver lock:
    • Application: 2" x 2" trailer hitch receivers
    • Inside pin length (span): 2-1/2"
    • Pin diameter: 5/8"
  • Limited 1-year warranty


The unique ball-bearing locking system on these Lifelong locks is supremely easy to use. When you pop the deadbolt onto the end of the pin, the integrated ball bearings engage the lock automatically.


This ball-bearing system also ensures that the structural integrity of the hitch lock's pin is maintained throughout. A typical padlock-style hitch lock has a significant taper at the end of the pin where the lock snaps into place. This taper weakens the pin, making it easier to break or cut. Because the ball bearings are responsible for engaging the lock on this Lifelong lock, no taper is needed. So, the pin diameter is the same along the entire length of the lock. The result is a hitch lock that is strong, durable and highly tamper resistant.



580404 Bulldog Life Long Combo Lock Set - Coupler Lock for Trigger-Style Couplers and Dogbone-Style Hitch Lock




California residents: click here



Customer Reviews

Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome - BD580404

Average Customer Rating:  4.0 out of 5 stars   (71 Customer Reviews)

Combo pack offers theft protection for your trailer with the butterfly-style coupler lock and secures a ball mount or hitch accessory with the receiver lock. Chrome-plated steel resists rust. Ball-bearing locking mechanisms provide extra security.

- BD580404
by:

The locks are still hard are work, I use them regularly. I do like them a lot except I sometimes struggle with the keys as they go in both directions, and turn both directions but only open one way. I also lost one of black rubber boot/cap, other than that they seem to work pretty good. 667804


Comments
Its been a year and its still holding on perfectly no issues no concerns.
Miguel S - 07/09/2020

86454

- BD580404
by:

I have had this same lock on my vehicle for several years. It’s a good design in general as it’s not easily snapped off by thieves. That’s why I bought this second lock set for my wife’s new car to prevent her tow ball from being stolen. The only reason I’m not five starring it is that it is difficult to get it to lock. I had to put the key in and turn it left and right multiple times while trying to get the key tumbler to snap down. I would definitely buy it again. 546973



- BD580404
by:

I received the wiring harness last week and put it on yesterday. It works great...no issues at all. I received the Bulldog Lifelong Trigger and Hitch Receiver locks today. They work great and makes me feel more confident when my trailer is sitting in a parking lot for a long period of time. The locks are well made and I don't think you could knock them off with a sledge hammer. Another thing I like about Etrailer is they ship fast. Very satisfied. 363398



- BD580404
by:

The bulldog couple lock for my hitch jammed after using a few times and after three strikes with a hammer it broke so I could remove it. 608059



- BD580404
by:

Junk. Coupler lock froze up on second use. Tumbler mechanism is quite flimsy. Phone with customer support and Bulldog said to spray it with WD 40. It was clear to me, with two locks keyed alike in my hand, that one set of tumblers worked properly, and the other was broken internally. This should not happen on second use. If I was on the road, nighttime, tired, small toolkit, trailer locked to tow vehicle, I would have been pissed, to say the least. After a couple of taps of the hammer, the lock popped open and the coupler pin fell out of the lock casting. Cheap Junk! Customer support was very helpful, and offered refund. I'm going back to my trusty old brass Master padlock. 564123



- BD580404
by:

Nice, quality lock set, that should keep my utility trailer secure when traveling. Weather covers on key slots are a nice touch. Feel heavy and well made. I'd buy them again. 172497


Comments
Theyve been working great. One thing Ive found that has made a big difference is keeping lock mechanism lubricated. They gave me fits for awhile, as they come with minimal lube I n them, but for easy operation should be liberally oiled inside lock mechanism.
Rico N - 02/06/2016

16702

- BD580404
by:

Looks to be a fairly strong set up. 866851



- BD580404
by:

Great product, does the job admirably. Just need to remember to take the receiver lock off once in a while to clean and lube it. Otherwise it becomes very difficult to remove. The trailer lock stays covered most of the time, so no issues there. 803099



- BD580404
by:

Liked the fact you could use one key on both devices. Difficult to open and close. After a few months of use the spring popped out of the hitch lock making it unusable. 800157



- BD580404
by:

purchased a grease gun hanger and keep this item on the wall of my trailer. I would not sell it back to you for triple the money. Handy and works well each time. James 778592



- BD580404
by:

I’ve had nothing but wonderful experience with etrailer. My first hitch, I ran over a set of keys and they were extremely helpful and had a new set shipped to me in 3 days. My second order was a bulletproof 4” drop hitch delivered safely in 3 days with free shipping! There’s no other company that I’ve done business with that has been so helpful and urgent to ship their product. I will never buy from another place! 768144



- BD580404
by:

Works well and as advertised. No issue s. 756447



- BD580404
by:

Very low quality Chinese import. 733863


Comments
If youre looking for a coupler and hitch pin lock set that is made in the USA, I recommend our etrailer.com Lock Set e99039 because it is will secure both your coupler and ball mount with two keyed-alike locks.
-- Victoria B - 12/23/2019

63935

- BD580404
by:

Solid and well made lock set. Exactly what I was looking for and was unable to find one of this high quality locally. Great service and fast deliverly, 694390



- BD580404
by:

Fits tight on the coupler latch. Stronger pin than the previous pin lock. Seems sturdy enough. 633838



- BD580404
by:

Very nice quality! Please with purchase. 616637



- BD580404
by:

Works great, just be sure to remove them periodically to clean and , if needed, to spray some lube into them. Otherwise, awesome locks! 605795



- BD580404
by:

product was as described in catalog. completely satisfied. 573252



- BD580404
by:

This was a simple item, no earth shattering revelations. Works as described. 563067



- BD580404
by:

I looked all over for a locking hitch combo and this is the best on the market 544053



- BD580404
by:

Seem to be well made, time will tell. Thank 543731



- BD580404
by:

When I first received this trailer lockset, the hitch pin lock only locked into position about 10% of the time. I called etrailer and told them about the issue. Their customer service was great and called me the same day to get a better handle on the problem. They shipped a replacement out even before I shipped the defective one back to them. etrailer is a great company and has terrific customer service that personally calls you to follow up on everything. I will definitely be doing business with them on my future needs. 528257



- BD580404
by:

Cap is hard to get off and key is not engaging all the time. Pretty nice and heavy though. 527345


Comments
The cap is meant to fit tightly to prevent loss. Id recommend using powdered graphite to lubricate the lock.
-- Mike L - 06/27/2018

40253

- BD580404
by:

Use both locks about 5 times over the past year with no complaints. I keep them in my she'd when not in use and they still look great. 526182



- BD580404
by:

It looks nice but the latch lock is too small and doesn’t fit my 2018 Interstate trailer. 501954


25
72
Show More Reviews

Ask the Experts about this Bulldog Trailer Coupler Locks

  • How To Operate the Bulldog CCP Trigger-Style Coupler Lock
    It sounds like you might have the Bulldog Lifelong Trigger-Style Coupler Lock part # BD580404 and if that is the case then I have attached for a you a review video on how to operate the lock. That said, if the lock has been on for six years without being removed then odds are it is stuck and will be very hard to remove as rust can form and dirt can get inside over time which can then make for them to be very difficult to operate. If that is the case then you will need to either cut the...
    view full answer...
  • Which Receiver and Trigger Lock for 2" Receiver and Wesco Trailer with Trigger Latch Coupler
    Since your 2015 Mercedes Benz GLA-Class has a 2" hitch receiver, the Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock # BD580404 will fit on your hitch as long as the outside measurements on the tube are not greater than 2-1/2". When it comes to the coupler lock, as long as the trigger-latch on your coupler is not wider than 3/4", the included coupler lock will also work on your Wesco trailer (this is the most common trigger latch size). These locks are...
    view full answer...
  • Replacing Lost Key To Bulldog Hitch Lock
    I have a solution for you, but we do not carry replacement keys for the Bulldog Trigger Style Coupler Lock # BD580404 . The way you would determine the correct replacement key would be with what is usually a 3 digit number engraved or marked on the side of the lock; these models usually had a CCP on one side and LB### marked on the other which would give you the key number. If you can't find a replacement key, I recommend replacing this with a Master Lock Trigger Style Coupler Lock # 605DAT...
    view full answer...
  • Troubleshooting Key That Won't Fit Inside Bulldog CCP Hitch Lock
    If you're having trouble getting the key to fit completely inside the lock core of your Bulldog Hitch Lock like # BD580404 then there might be some corrosion/debris built up inside that just needs to be cleaned out. I recommend trying to spray some lubricant like WD40 inside the lock and letting it sit for a bit. You may want to repeat this process a few times while sliding the key in to try and lubricate the mechanism. Hopefully this will clean out the lock so that it will work again....
    view full answer...
  • Recommended Trailer Hitch Pin Lock for 1-1/4 Inch Hitch With Matching Trailer Coupler Pin Lock
    In order to obtain a trailer hitch pin lock for 1-1/4" hitches as well as a trailer coupler pin lock that uses the same key you will have to use the etrailer.com Trailer Hitch Receiver Lock part # e98879 and etrailer.com Trailer Coupler Lock part # e98889. If these two locks are both ordered at the same time and you select the keyed alike option then they will both come with the same key, The Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock part # BD580404...
    view full answer...
  • Recommendation for Class V Hitch Lock and Coupler Lock
    There are many hitch receiver sizes available in Class V. For a 2 inch receiver, I recommend the Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock - Chrome # BD580404 to give you both the hitch lock and the trigger coupler lock. For a 2-1/2 inch receiver, I recommend the Trailer Hitch Receiver Lock - Extra Long - Flush Design for 2-1/2" Trailer Hitches # e98881. For a 3 inch receiver, I recommend the hitch lock # WS05. This hitch lock is one of the...
    view full answer...
  • Lock Cylinder Won't Release on the Trailer Hitch Receiver Lock Part # BD580404
    It sounds like the ball plunger on the shaft of the Bulldog Trailer Hitch Receiver Lock part # BD580404 has become seized up which would either be from rust of dirt/grime. In order to free the lock cylinder you will want to try tapping it with a hammer while rotating it back and forth if possible. You may then also need to latch onto the lock cylinder with a pair of vice grips and use some heat in order to remove it. I recommend applying some grease to the ball plunger before reinserting...
    view full answer...
  • Trailer Coupler and Hitch Lock Set for 1-1/4 Inch Receiver
    I may have exactly what you're looking for by pairing up a BOLT Trailer Hitch Receiver Lock for 1-1/4 inch hitches and a BOLT Trailer Coupler Lock, which uses a similar double ball bearing locking mechanism as the Bulldog coupler lock found in # BD580404. BOLT locks don't come with keys because they actually use your vehicle's ignition key to code the locks. That being said, these are only offered for certain model year Ford, GM, Chrysler, Dodge, Jeep and Ram vehicles. For example, #...
    view full answer...
  • Solution for Lost Keys to Bulldog Hitch Lock
    If you no longer have the keys for your existing Bulldog Coupler Lock, unfortunately there is no identifiable information on the lock itself that will refer to the matching key number. Your best option will be to simply replace the entire lock assembly. I recommend looking at the Bulldog Lifelong Trigger-Style Coupler Lock and 2 Inch Trailer Hitch Receiver Lock # BD580404. This kit will includes both a coupler and hitch lock to secure your valuables. It includes 2 high-security square...
    view full answer...
  • Hitch and Coupler Lock Recommendation for PortaChopper Trailer with Trigger Latch Coupler
    Could I see a picture of your coupler by chance? We have the Bulldog Lifelong Trigger-Style Coupler Lock # BD580404 which comes with a trigger lock and a 5/8 inch diameter coupler lock that has a usable span of 2-1/2 inches, but without more info on your coupler it's hard to say if that would be ideal.
    view full answer...
  • 2-1/2 Inch Span Bulldog Lifelong Hitch Lock Recommendation
    For a longer version of the hitch lock that comes with the part # BD580404 you would want the part # BD580402 as it has a 2-1/2 inch span. For the matching trigger latch lock as well you would want the part # BD580403.
    view full answer...
  • Recommendation for a Trailer Hitch and Coupler Lock Set that Can be Keyed Alike
    Bulldog does not offer the Lifelong Trigger-Style Coupler Lock and Hitch Lock Combo, # BD580404, with a keyed alike option. The two locks included with this kit will be keyed alike and replacement keys are available using part # CKEY-FS, but they do not sell additional sets with the same lock cores. For a lock set that can be keyed alike, you may want to take a look at the etrailer Hitch and Coupler Lock Set, # e99039. You can purchase as many sets of these as you would like keyed...
    view full answer...
  • How to Remove a Stuck Bulldog Locking Hitch Pin from Trailer Hitch
    Sounds like the internal ball-bearings on your Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock, # BD580404, may be stuck. Try using a penetrating spray lubricant, like the UltraLube Biobased Spray Lubricant and Penetrant. The spray lubricant will penetrate to the locks bearing and help break up any contaminates that may be causing the lock to stick. Plus, the spray will make separating the lock easier due to lowering the surface resistance of the metal lock.
    view full answer...
  • Troubleshooting Stuck Bulldog Lifelong Hitch Lock # BD580404
    Most likely the internal ball-bearings used to secure and release the pin for your Bulldog Lifelong Hitch Receiver Lock # BD580404 are simply stuck due to some corrosion or debris. Even when trying your best to protect a lock like this from the elements using the provided cap, moisture can be pretty persistent in finding a hard-to-reach access point. What I recommend doing is just using some kind of penetrating spray lubricant both inside the key slot and around the barrel where the...
    view full answer...
  • How to Correct Lock that Seized from Salt Exposure
    Salt is brutal on steel, especially surfaces that you cannot easily see and keep clean, such as the internal parts of a lock. Regular applications of an anti-corrosive like PB Blaster on a new lock can help prevent some of this deterioration but if the lock didn't get this routine "TLC" and is now seized you may be able to dissolve the corrosion but it may take a few applications and some patience while the solvent works. Apply the spray solvent to the key hole. Try to get as much of...
    view full answer...
  • Availability of a 3-Piece Keyed-Alike Lock Set for Hitch, Coupler and Bikes
    We do offer a range of keyed-alike lock sets such as the Bulldog Lifelong Trigger-Style Coupler Lock and 2-Inch Trailer Hitch Receiver Lock Set # BD580404. This two-piece set does not include a bike cable lock, however. We do not carry any such 3-piece set, but we can offer you separate cable locks for the bike. For example, we offer the 10-Foot Cable Lock # e98891, the Tow Ready 4-foot Vinyl Coated Steel Cable Lock # TR63255. We also offer a combination lock set # 1470DAT from Master...
    view full answer...
  • Recommended Equipment Needed to Lock Boat Trailer to 2013 Ranger Trail
    If you already have a hitch receiver lock then you can use a coupler lock, like our etrailer.com part # e98888 that you referenced, to deter theft of your trailer. However, if you do not already have a hitch receiver lock then I recommend using something like the Bulldog Lifelong Trigger-Style Coupler Lock and 2" Trailer Hitch Receiver Lock # BD580404 instead. This will help to deter someone from simply removing your ball mount to steal your boat trailer. The receiver lock is compatible...
    view full answer...
  • Recommended Tow Dolly for 2007 Toyota Prius behind 2017 Toyota Sienna
    The tongue weight of a tow dolly is minimal because it has the weight of the front of the tow vehicle across the axle. So you will have almost no tongue weight when using the Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs # RM-2050-1 or # RM-2050-1. You will simply need to account for the towing weight of the 545 lb # RM-2050-1 or the 620 lb # RM-2000-1 along with the 2,932 lbs curb weight of your 2007 Toyota Prius. Your 2017 Toyota Sienna has a towing capacity of 3,500...
    view full answer...
  • Keyed-Alike Hitch Pin Lock And Trailer Coupler Lock
    If you have a trigger-latch-style coupler we have just the item you are looking for. I recommend the Bulldog Lifelong Trigger-Style Coupler Lock and 2 inch Trailer Hitch Receiver Lock, part # BD580404. This kit includes a 2-1/2 inch hitch receiver lock designed for 2 inch receivers along with a trigger-latch-style coupler lock that measures 3/4 inches long and is 1/4 inch diameter. This kit is keyed-alike and has a chrome plating for excellent rust resistance. I have attached a...
    view full answer...
  • Recommended Weight Distribution System for 2018 Shasta Oasis 18BH Travel Trailer
    Your 2018 Shasta Oasis 18BH has a hitch weight of 349 lbs dry weight. When you look for a compatible weight distribution system, you want to consider the total tongue weight of your system. This includes the loaded tongue weight of your trailer as well as any cargo behind the rear axle of your towing vehicle. Each weight distribution system will have a range that is allowed for this total tongue weight rating and we just want to fall within that range. For your application, I recommend...
    view full answer...
  • What Material is the Trailer Coupler Latch Lock # 2878DAT Made From
    The 7/8" Wide Trailer Coupler Latch Lock # 2878DAT is made of hardened steel. As far as how easy it is to defeat, ultimately any lock can be defeated given enough time and the right tools. Since there is no gauge of how "breakeable" a specific lock is, we recommend making your setup look intimidating to deter would-be thieves. If you are wanting to deter theft of your trailer when it is coupled then the Bulldog # BD580404 is a great option because it has a coupler lock and a ball...
    view full answer...
  • Recommended Trailer Hitch Adapter To Expand Hitch On 2015 Ford C-Max
    For the Yakima Rack and Roll Trailer - 66" # Y08106, you will only need a 2 inch ball that you already have with your Weigh Safe adjustable ball mount. The adapter for the trailer hitch on your 2015 Ford C-Max I recommend is the Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6 Long # C45785. This will reduce your hitch receiver's tongue weight capacity by 50%. Based on the application, this should not be an issue, but this would not be wise for any larger application. To...
    view full answer...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer coupler locks for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer coupler lock information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Written by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Victoria B
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Jenny M

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.