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Premium Trailer Lock

$59.95 $49.50 inc GST

or 4 fortnightly payments of $12.38 with Afterpay More info

Engineered for Quality

SKU: CM051 Category: Tag:


Premium Trailer Lock

Couplemate has been in the Caravan coupling lock and boat trailer lock business for almost 20 years. The heavy duty trailer lock we first developed works so well we have made no changes at all.

When buying a Premium Trailer Lock, ask your dealer if he will replace it if the welds break? Couplemate offers a full replacement policy on all caravans locks (excluding padlocks).

Getting it right the first time is of the utmost importance to Couplemate.  Companies like ours, unashamedly stake our reputation on every product we sell.

Purchase a variety of easy to install trailer locks and hitch pin locks below

Mandatory Insurance Requirements.

Did you know that most Insurance companies now require you to install a trailer lock as an essential policy requirement?Safety Trailer Lock

It is possible to tow a trailer with a safety chain, so the above procedure prevents thieves from using this chain.

TIP: Use the safety chain to loop over the top bar and use the padlock to lock the end of your safety chain.

Premium Trailer Lock is a security lock that helps prevent your trailer from being stolen from the boat ramp or even from outside your home.

Notice how the caravan coupling lock covers the nut under your two ball to prevent the nut from being undone.

Unfenced or unsecured storage areas are a significant cause of trailer theft.

However, the Couplemate caravan coupling lock is made from an 8mm solid steel plate to help [revent theft.

If your investment is to be protected, then in our opinion, the value of your trailer locking mechanism should be relevant to the amount you wish to protect.

Fit’s most 50mm couplings, unconditional money-back guarantee if found faulty due to bad craftsmanship.


  • If the coupler lock fits loosely, place a section of the safety chain under the locking bar.

NOTE: Please don’t travel with this locking system in place as it can buck during parking when extreme angles can occur.

In extreme cases, the momentum created when negotiating tight corners at speed can cause and has caused trailer roll.

This device locks the trailer to the car. As a result, the entire rig may roll over on sharp corners at excessive speed.

Finally, if you wish to travel with a trailer lock in place, then use the Couplemate Guide and Lock device.

Caravan and Trailer Coupling Lock to suit all 50mm Standard Couplings

Couplemate Trailer Parts sells only the best quality Premium Trailer Lock and caravan spare parts throughout Australia.

Customers are welcome to either pickup or take advantage of our low freight rates. Express shipping to Melbourne, Sydney, Brisbane, Perth, Adelaide, Darwin, and Hobart.

We also ship products to New Zealand via Australia Post Air Express.

© Steve Wotherspoon May 9, 2014. Images and text may be copied, provided a link back to the copied page and the source is displayed where the content or image is located.

Additional information

Weight3 kg
Dimensions30 × 20 × 5 cm


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