Master Lock Universal Trailer Coupler Lock – Heavy-Duty Trailer Tongue Lock
Protect your trailer from theft with the Master Lock Universal Trailer Coupler Lock, a durable security solution designed to fit most standard trailer couplers. This heavy-duty coupler
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Protect your trailer from theft with the Master Lock Universal Trailer Coupler Lock, a durable security solution designed to fit most standard trailer couplers. This heavy-duty coupler lock prevents unauthorized hitching by blocking access to the trailer coupler, keeping your cargo, utility, or equipment trailer secure when parked or stored.
Built from rugged steel with a corrosion-resistant finish, this coupler lock is engineered to withstand harsh weather conditions and tampering attempts. Its universal design fits most 1-7/8", 2", and 2-5/16" couplers, making it a versatile choice for a wide range of trailers.
The bright, highly visible finish acts as a theft deterrent, while the secure locking mechanism ensures reliable protection for your trailer whether it’s parked at a jobsite, campground, driveway, or storage lot.
Installation takes only seconds—simply place the lock over the coupler and secure it with the included key lock system.
Key Features
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Universal Coupler Fit – Works with most 1-7/8", 2", and 2-5/16" trailer couplers
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Heavy-Duty Steel Construction – Provides strong anti-theft protection
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Highly Visible Deterrent – Bright finish discourages theft attempts
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Weather Resistant Finish – Protects against rust and corrosion
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Quick Installation – Locks onto coupler in seconds
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Ideal for Many Trailer Types – Cargo, utility, boat, and equipment trailers
Specifications
| Specification | Details |
|---|---|
| Product Type | Trailer Coupler Lock |
| Brand | Master Lock |
| Fitment | Universal coupler fit |
| Coupler Sizes | 1-7/8", 2", 2-5/16" |
| Material | Steel |
| Finish | Corrosion-resistant coating |
| Lock Type | Keyed lock |
| Keys Included | Yes |
Typical Applications
This coupler lock is commonly used for:
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Cargo trailers
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Utility trailers
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Boat trailers
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Equipment trailers
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RV trailers
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Landscape trailers
It prevents thieves from hooking your trailer to another vehicle and towing it away.
📞 Call/Text: 517-225-1991 🌐 AAATrailer.com
What sets us apart is our dedicated team of knowledgeable professionals who are always ready to assist. Great customer service isn't just a promise—it's the foundation of our success. We invite you to visit our showroom or reach out for personalized advice. Whether you're purchasing online or stopping by, we're here to make your trailer journey seamless. Visit Us Today
- Address: 4675 East Grand River Ave, Howell, MI 48843
- Phone: (517) 225-1991 (Call or text)
- Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment
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We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement.
Master Lock Universal Trailer Coupler Lock – Heavy-Duty Trailer Tongue Lock
Sale price
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Regular price
$45.00
SAVE $-45.00
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Frequently Asked Questions
Get answers to common questions
Yes. We partner with UPS and FedEx for shipping. Delivery timelines can vary by item and destination.
Yes, delivery may be available depending on your location and the item. For the fastest confirmation (and pickup/delivery coordination), please call or text us and we’ll guide you through the options.
If you need a return or exchange, email us first so we can discuss the best solution. We’ll help confirm eligibility and provide return instructions and the correct shipping address.
Yes—AAA Trailer offers financing options for select trailer brands. Details and application links are available on the Financing page.
For most products, a license is not required. If an item does require one, it will be clearly stated on the product page.
Warranty coverage depends on the manufacturer/product and will be listed when applicable. For example, some trailer listings specify coverage such as 1-year overall + 1-year axle coverage.
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Master Lock Universal Trailer Coupler Lock – Heavy-Duty Trailer Tongue Lock
$45.00
Fast Shipping
In stock and ships in 1-2 business days
Pickup Available
Ready for pickup at our Grand Rapids location
Expert Support
Call us if you need help with fitment or installation
Easy Returns
30-day satisfaction guarantee on all parts
Ships in 1-2 business days
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30-day satisfaction guarantee
