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  1. Trailer Hitch Lock
  2. Bulldog
  3. Fits 2 Inch Hitch
  4. Standard Pin Lock
  5. Keyed Unique
  6. 2-1/2 Inch Span
Bulldog Lifelong Trailer Hitch Receiver Lock for 2" Hitches - Flush - 2-1/2" Span - Chrome

Bulldog Lifelong Trailer Hitch Receiver Lock for 2" Hitches - Flush - 2-1/2" Span - Chrome

Item # BD580401
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Trailer Hitch Lock
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Shipping Weight: 0.89 lbs
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BD580401 - Flush Pin Bulldog Trailer Hitch Lock
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This solid, high-strength steel, flush-style hitch lock lets you secure your ball mount, bike rack, cargo carrier or other accessory to your 2" x 2" trailer hitch receiver. Chrome finish guards against corrosion. 5/8" Pin diameter. Lowest Prices for the best trailer hitch lock from Bulldog. Bulldog Lifelong Trailer Hitch Receiver Lock for 2" Hitches - Flush - 2-1/2" Span - Chrome part number BD580401 can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (400)
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Bulldog Trailer Hitch Lock - BD580401

  • Fits 2 Inch Hitch
  • Standard Pin Lock
  • Keyed Unique
  • Bulldog
  • 2-1/2 Inch Span
  • Steel
  • Flush Pin

This solid, high-strength steel, flush-style hitch lock lets you secure your ball mount, bike rack, cargo carrier or other accessory to your 2" x 2" trailer hitch receiver. Chrome finish guards against corrosion. 5/8" Pin diameter.


  • Flush-style trailer hitch receiver 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 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 pin offers superior strength and durability
  • Chrome plating resists rust
  • Plastic cap covers key slot to help prevent corrosion in the locking mechanism
  • 2 High-security, square keys included


  • 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 this Lifelong hitch lock 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 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.

580401 Bulldog Life Long Dogbone Style Hitch Lock for 2" Hitches

California residents: click here

Customer Reviews

Bulldog Lifelong Trailer Hitch Receiver Lock for 2" Hitches - Flush - 2-1/2" Span - Chrome - BD580401

Average Customer Rating:  4.7 out of 5 stars   (400 Customer Reviews)

This solid, high-strength steel, flush-style hitch lock lets you secure your ball mount, bike rack, cargo carrier or other accessory to your 2" x 2" trailer hitch receiver. Chrome finish guards against corrosion. 5/8" Pin diameter.


This lock is totally awesome! Very easy to install and makes it very hard for to steal your accessories. That is why I purchased this lock. They stole my trailer hitch cover because I did not have a one. So I am very satisfied now that they will not be able to steal my cover. Highly recommend this product.


Fit both my wife beach cruise and the kids mountain bikes, can't think of a thing i would change.


Looks great on my truck. Just what I was hoping for.


Great lock! Has already prevented one low life from stealing my hitch. The lock paid for itself with just that one incident. I highly recommend it.


I really loved how ordering and shipping work. There was a name tagged to every event from etrailer. Shipping was fast too. The tow hitch fit like a glove and quality looks great. Thanks etrailer. Keep up the good work.


Both items ordered came as promised and in perfect condition. Very pleased with the service offered by eTrailer!


Recently purchased a Roadmaster High-Low Hitch adapter #RM-048-8 and a Bulldog receiver lock #BD580401 from The products were unremarkable and the same as you can purchase anywhere. The real plus was the price and fantastic customer service (products were shipped the same day as ordered and received 3 days later) from etrailer that made the difference to me . I will always check etrailer first for my towing needs.


I have a stock Tacoma and this would not fit the factory receiver. Attempted to return but the cost of shipping made it not worth the effort. Will not buy from etrailer again.


I currently work at a top 500 3rd Party Logistics company as the Quality Coordinator. And as silly as it is I was really impressed with the slogan you have imprinted on your boxes. I think that was really impressive. Those are the touches that make people remember the companies they have purchased from, or received gifts from.
The products I received as a gift were also very nice. The lock was easy to install, along with the hitch cover. I have shown off my hitch cover to everyone that I know. Thank you


1st time etrailer customer. From ordering to payment to delivery, everything was very user friendly. Products were exactly as described. Fast delivery 1 day from order date. And the prices were lower or competitive to other on line vendors.
etrailer site bookmarked for my next modification to my Jeep.


simple receiver lock to prevent removing the "ball" from the truck. provided excellent service and value.


Web site was easy to use I found what I needed. They even had a video on how to use the product I ordered. I would use etrailer again and I highly recommend them for anyone who are looking to use them for a purchase.


Just received this hitch cover lock. I like this product as it is chrome on both ends and has a regular key. Also like the rubber keyhole cover. I rate it excellent so far.


Have a 98 4-Runner with the factory towing pkg. This pin fits perfectly. Some folks were concerned about the protective lock cap not being snug enough but this one was tough to remove; maybe it will loosen over time. Works a bit stiffly right now, but that will most likely loosen up as time passes. I mean, it just arrived today. All in all, this was a good buy at a good price.


Works perfect looks great with bw tow and stow chrome


Product works as expected. It fits in the receiver and locks/unlocks. Feels well made. Reasonable price too.


yes i did recive my product that i ordered it was fast and i was very happy i do have to order 1 more thing i will be doing that in the next couple of weeks and if there is any thing else i will be ordering from etrailer i have friends that i camp with and will be telling them about etrailer if they are needing anything thanks dave newill


Best lock I have ever owened


This item arrived at the same time as the rack, a must. Good quality, fair price and no brainer to use. Good stuff Etrailer, thanks


Outstanding product


Nice locking pin, very sturdy.


Works, but the locking and unlocking is a little cumbersome. The instructions were not very good.


Quality products! Great customer suppor t.


Great product, easy installation


Good and stout. Will make tailgater’s think twice.

Show More Reviews

See what our Experts say about this Bulldog Trailer Hitch Lock

  • Can the Bulldog Lifelong Trailer Hitch Receiver Lock Be Physically Broken Off
    The Bulldog Lifelong Trailer Hitch Receiver Lock part # BD580401 is an extremely durable lock. It is designed to provide security for 2" hitch mounted accessories such as a ball mounts. In regards to security, I took a look at some of the reviews and there were no mention of the lock failing. That said, the mere presence of a lock can be enough to deter most thieves. To answer your specific question, no, I do not think a pipe could be placed on the end to snap the lock off. This is not...
    view full answer...
  • Does Bulldog Hitch Lock # BD580401 Have Weight Capacity
    Hitch pins and hitch pin locks like the Bulldog # BD580401 do not typically have weight capacities as they do not normally bear the weight of the trailer since the tongue weight pins the mount into the hitch tube. This would work well in a flat towing setup too even though the tongue weight isn't quite there.
    view full answer...
  • Hitch Lock for a Class IV Hitch
    Yes, the Bulldog Lifelong Trailer Hitch Receiver Lock for 2" Hitches item # BD580401 is rated for a class IV hitch but it will only fit one with a 2" receiver. If your class IV hitch has a 2-1/2" or 3" receiver you will want the Draw-Tite Hitch Receiver Lock item # BD580412.
    view full answer...
  • Bulldog Lifelong Trailer Hitch Lock BD580402 Versus BD580401
    There is no functional difference between the two. The only difference between the two is the construction. The # BD580402 is constructed of stainless steel, the # BD580401 is chrome plated steel. The # BD580402 will offer better corrosion resistance, as over time the chrome plating of the # BD580401 can wear off, allowing corrosion to set in. I'd recommend going with the stainless # BD580402 option. You can view demonstration videos by using the provided links.
    view full answer...
  • Will the Bulldog Receiver Lock Part # BD580401 Fit a 2 Trailer Hitch Curt Part # BD580401
    Yes, the Bulldog Lifelong Trailer Hitch Receiver Lock part # BD580401 will work with the Draw-Tite Max-Frame Trailer Hitch part # 75888 which is a fit for your 2017 Mitsubishi Outlander. It is rated for use on Class III-V trailer hitches and also has a unique ball-bearing locking cylinder which ensures smooth operation. I have attached a review video of the lock and install video of the trailer hitch for you as well.
    view full answer...
  • Hitch Lock for the Factory Trailer Hitch on a 2013 Ford F-150
    The width of the factory trailer hitch on your 2013 Ford F-150 is just slightly too wide to use the Bulldog hitch lock # BD580401. It has a usable span of 2-1/2 inches so it is just 1/16 of an inch off. I recommend lock # e98880. This lock has a usable span of 2-5/8 inches which is 1/16 inches longer than your hitch width. I have included a link to a video review of this lock for you.
    view full answer...
  • Can Pilot Ford Brake and Tail Light L.E.D. Trailer Hitch Cover # CR-017F be Used as Only Taillight
    The Pilot Ford Brake and Tail Light L.E.D. Trailer Hitch Cover # CR-017F is intended as a cosmetic accessory item. It is not DOT-approved as a brake/tail light for use on its own. All of your vehicle standard brake and tail lights must still be used along with this product. The Ford logo illuminates blue when running lights are on and LED lights in the background brighten when the brake pedal is pressed. This hitch cover fits 2-inch hitch receivers and connects to your vehicle lighting...
    view full answer...
  • Is Factory Bumper Hitch Removed to Install Curt Class III Hitch # 13301 on 2014 Chevrolet Silverado
    The Curt Class III Hitch for your 2014 Chevrolet Silverado 1500, part # 13301, does require removal of the OEM light-duty bumper hitch. Both hitches cannot be installed at one time. I have linked the installation instructions; I have also included a video showing installation of the Curt 13301 on a 2013 Silverado. Also provided are two articles that may be helpful; one covers general installation tips and the other specifically covers the process for cleaning out weld nuts prior to hitch...
    view full answer...
  • What Diameter Hitch Pin Lock Does Kuat Sherpa 2.0 Bike Rack
    The Kuat Sherpa Bike Rack # SH22G was designed to be used with the 1/2 inch hitch pin that comes with it. But we have found that the Bulldog part # BD580401 has a 5/8 inch diameter does work.
    view full answer...
  • Recommended 2 Trailer Hitch Receiver Lock That Can Be Keyed Alike
    I do have a great alternative for you, however the Bulldog Lifelong Trailer Hitch Receiver Lock # BD580401 cannot be keyed alike. If you were to order multiple sets they would all likely use a different key. For a very similar unit that can be keyed alike I highly recommend the Trailer Hitch Receiver Lock # e98880. Like the Bulldog model you were looking at this is designed for 2 inch trailer hitch receivers, features a chrome plated construction to help with resisting corrosion,...
    view full answer...
  • What Diameters Are Available For Hitch Pins
    Hitch pins come in 1/2 inch and 5/8 inch diameters with the 5/8 inch being the most common. Since it sounds like your hitch pin hole has elongated, you should get a new hitch. Send me the make, model, and year of your vehicle and I will make a specific recommendation. For a 1/2 inch diameter hitch pin, I recommend the Curt Class I and II Pin, Item # C21403, for a basic pin or the Tow Ready Trailer Hitch Pin, Item # TR63254 if you need one that locks. For a 5/8 inch pin, I recommend...
    view full answer...
  • Dimensions Of Weigh Safe Ball Mount With Built In Scale # WS8-2 And # WS10-2 For Needed Clearance
    On the Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 8" Drop, 9" Rise, # WS8-2, There is a distance of 8-3/8 inches from the center of the nearest pin hole to the center of the ball and 9-1/2 inches from the center of the furthest pin hole to the center of the ball. From the center of the hitch pin hole to the closest part of the rise, you will have 3 inches and 4-1/4 inches from the further pin hole. On the # WS10-2 you will have the same measurements as the closer pin hole...
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Cole B
Installed by:
Cole B
Employee David F
Installed by:
David F
Employee Chris R
Video by:
Chris R

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