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King Pin Lock


4.94 out of 5

The most effective deterrent available, the Trailer King Pin Lock is designed to protect dropped/untethered trailers from the fifth-wheel plate of a would-be thief tractor. Secure your king pin with this conical king pin lock.

Weight 5.044 lbs
Dimensions 12 x 9 x 2.875 in
Key Options

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Cast Steel


One spray of Slick 50 One Lube every 90 days, or when needed. WD40 is NOT recommended and will have an adverse affect on your lock.

Optional Use

Lock-Out Tag-Out and Maintenance, Reusable



King Pin Lock

Use Our King Pin Lock To Secure Untethered Trailers

Protect expensive cargo stored in a dropped trailer from a would-be thief tractor. Our lock lock is long lasting and dependable.

Lock Exterior

The cast steel King Pin Lock is nearly impenetrable.


  • Conical shape
  • Convenient handle included
  • Made of cast steel

Lock Interior

Like all WAR-LOK products, the King Pin Lock comes with a nine cylinder disk locking mechanism. This makes it nearly impossibly for a thief to pick your lock.

Keying Options

Key your locks differently, alike, or alike to a master key. Furthermore, newly purchased locks can be keyed alike to an existing lock. WAR-LOK Cares About Your Security: WAR-LOK will verify ownership before any key is copied. Our WAR-LOK Assembly Team cuts every key in Dallas, Texas, USA.


(Video) Securing Your Lock

This video shows how to apply our lock to a king pin. Additionally, it demonstrates how a king pin lock blocks the fifth wheel of a thief tractor. Click here to view.


Customers' review

Rated 4.94 out of 5 stars
16 reviews
5 stars 15 93 %
4 stars 1 6 %
3 stars 0 0 %
2 stars 0 0 %
1 star 0 0 %

16 reviews for King Pin Lock

    5 out of 5

    Very secure Best king pin lock I've owned!

    5 out of 5

    Fabulous king pin lock This king pin lock is without peer. It is extremely well made, easy to apply, and may be ordered keyed alike to other War-Lok locks whether at the same time or later. Very sturdy, massive lock. Dave Reid

    5 out of 5

    Undefeated even after 13 years of use We bought 2 of these back in 2004 (keyed alike) and they have never once let us down. Our plant expanded so we bought 2 more (keyed the same as our originals) and we're still going strong. I can't tell you how many times these have been racked over the years by drivers who don't remember to take the locks off and they still hold up. A few dings and dents, but otherwise still functional. Worth every dime to protect your trailers and cargo.

    5 out of 5

    It does its job. I know my trailer is secured with all war-lock products and I have a peace of mind knowing that when I attached the king pin lock I know my trailer is not going anywhere. highly recommended

    5 out of 5

    Trucking operations of any size have bounty lists for missing trailers. Some trailers are simply misplaced, but many are stolen. It takes only a minute to install and a minute to remove, so my Warlok kingpin lock gets frequent use. I've used other kingpin locks over the years, but this one gives me the greatest confidence. It's the best designed and best built by far. Also, since my Warlok products are keyed alike, one key is all that's needed for my kingpin lock, air brake lock and padlock.

    5 out of 5

    I work at a truck driving school. We have trailers damaged in training that are not to be used. We use some trailer for storage. Those trailers all have Warloc King Pin locks. Even with having a large red "out of service" decal on the header board, students still back under those trailers. Each lock has been struck dozens of time....not a single one has broken. Built strong

    5 out of 5

    I bought this king pin lock because it is far lighter than a previous one that was much more cumbersome to install. It holds great and I find the best way to install it is to toss it in a walmart bag then put it on and that helps to keep it clean. I also bought about 6 feet of yellow plastic chain and a carabiner at Home Depot to hook at to the handle when it's installed so it's visible and so no one tries to hook the trailer. The cheaper king pin locks come with a little tag that blows around and gets all greasy I found the plastic chain works perfectly.

    5 out of 5

    Great when needed. And to have many products that you can key alike is nice.

    5 out of 5

    Smart product! Never loose a trailer again with this product. Secures the trailer from being moved or misplaced ever again.

    5 out of 5

    Great King-Pin lock. We would never use anything else. Complete comfort in knowing our trailer can't be moved while this lock is installed.

    5 out of 5

    Absolutely the best Kingpin lock I have seen in the Commercial Trucking Industry! Made of strong and sturdy materials that will keep your trailer secured.

    4 out of 5

    A great pin lock. If someone tries to hook up to your pin locked trailer the design rides the trailer over the fifth wheel, if you install the lock with the keyhole towards the rear.

    5 out of 5

    We have used these locks on trailers that are stored at our dealership for many years and have never had a problem with them. They are a great product.

    5 out of 5

    I use mine every week works great

    5 out of 5

    War-Lok products are so solid. They work flawlessly

    5 out of 5

    I have this on ny trailer at a storage yard over a weekend. The yard hustler had to move the trailer in backing under he jammed into the lock and left marks but the lock in still in use today. That has been 7 years ago.

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Installation & Removal

TKP-Installation-Diagram1The WAR-LOK King Pin Lock is designed to fit all standard trailers.

To install the lock:
1. Slide the lock fully up over the king pin.
2. Push the lock cylinder inward until it clicks into place.

Helpful Hint: Slip a thin plastic grocery bag over the king pin prior to installing the lock to reduce the amount of grease adhering to the lock.

To remove the lock:
1. Insert the key into the lock cylinder.
2. Hold the lock firmly and turn the key clockwise approximately 3/4 turn. Pull the lock cylinder out to release the lock.

Return Policy

You may return your purchased products within 30 days from the ship date for a full refund or exchange. WAR-LOK will cover additional shipping costs to correct any mistakes it has made in fulfilling an order.

In the event you are unsatisfied with your purchase, returns may be subject to a restocking fee up to 25% of the purchase price.


The WAR-LOK Trailer King Pin Lock is conically shaped, and has a convenient handle for carrying. It's heavy-duty body is just what you need to protect your king pin from a would-be thief tractor. It's heavy duty quality offers a reliable alternative to the king pin locks that cost a few hundred dollars. Buy today.  

Secure your high-value cargo with the WAR-LOK King Pin Lock. Link to online store in bio. #trucking #warloksafe @warloksafe

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