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Item #:
128070075
Master Lock Silver Trailer Hitch Lock, Trailer Tongue Lock for RV, Horse Trailer, or Utility Tool Trailer, 377DAT
Item #:
128070075
SAR 129
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Imported from USA store
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Advanced locking mechanism to resist picking and prying, ensuring your vehicles, trailers, and RVs are secure.
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What Stands Out
Universal Fit
Designed to fit a wide range of couplers, ensuring compatibility across multiple trailer types for ease of use and enhanced convenience for all users.
Durable Construction
Crafted from high-quality materials, this coupler lock offers exceptional resistance to weather and wear, guaranteeing long-lasting security and performance in various conditions.
Easy Installation
User-friendly design allows for quick and effortless installation, providing immediate protection for your valuable towing equipment without complex setups or tools.
Product Details
| Brand Name | Master Lock |
| Recommended Uses For Product | Trailer |
| Number of Pieces | 3 |
| Included Components | MASTERLOCK |
| Model Number | 377DAT |
| UPC | 071649047954 |
| Model Name | MASTERLOCK |
| Global Trade Identification Number | 00071649047954 |
| Manufacturer | Master Lock |
| Unit Count | 1.0 Count |
| Manufacturer Part Number | 470-377DAT |
| Item Type Name | Master Lock 377DAT COUPLER LOCK UNIVERSAL |
| Additional Features | Unlock keys |
| Lock Type | Combination Lock |
| Controller Type | Hand Control |
| Control Method | Touch |
| Smart Home Compatibility | Not Smart Home Compatible |
| Style Name | Trailer Hitch Lock |
| Color | Silver |
| Shape | Round |
| Material Type | Metal |
| Finish Types | Polished |
| Item Dimensions | 6.56 x 7.5 x 2.68 inches (16.7 x 19.1 x 6.8 cm) |
| Item Weight | 1 Pounds (450 grams) |
| Brand | Master Lock |
| Special Feature | Unlock keys |
| Item dimensions L x W x H | 6.56 x 7.5 x 2.68 inches (16.7 x 19.1 x 6.8 cm) |
| Material | Metal |
Who Should Buy?
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Frequent Travelers
Ideal for those who travel often and need to secure trailers, providing peace of mind during road trips.
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Trailer Owners
Perfect for individuals owning trailers needing a reliable coupler lock to prevent theft and unauthorized access.
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Outdoor Enthusiasts
Great for campers and outdoor lovers requiring a secure option for locking their equipment and trailers.
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Heavy-Duty Use
Not suitable for commercial applications requiring locks with higher security ratings beyond general use.
Product Description
Master Lock Silver Trailer Hitch Lock, Trailer Tongue Lock for RV, Horse Trailer, or Utility Tool Trailer, 377DAT
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Master Lock MASTERLOCK 377DAT COUPLER LOCK UNIVERSAL used for?
Answer: The Master Lock 377DAT Coupler Lock is designed to secure trailers and couplers, providing peace of mind on the road. This universal lock fits most coupler designs and is an essential tool for anyone using trailers for transportation. By preventing unauthorized access and potential theft, it protects valuable cargo or property. Whether you're a contractor transporting tools or a road trip enthusiast, using this coupler lock ensures your load remains safe during your journey. -
Question:
Is the Master Lock MASTERLOCK 377DAT suitable for all types of trailers?
Answer: Yes, the Master Lock MASTERLOCK 377DAT is designed to be universal, meaning it can fit most standard trailer couplers. Its versatile design allows it to accommodate various types of trailers, including boat, utility, and car trailers. The adjustable locking mechanism ensures a snug fit, enhancing security and reducing the risk of tampering. This adaptability makes it a prime choice for anyone using different trailers, simplifying the process of securing them. -
Question:
What materials are used in the construction of the Master Lock MASTERLOCK 377DAT?
Answer: The Master Lock 377DAT is constructed from durable materials, including a hardened steel shackle and a weather-resistant coating. This robust build resists attempts to cut or pry the lock open, significantly enhancing its security features. The weather-resistant finish ensures longevity, protecting the lock from rust, corrosion, and other environmental factors. This makes it ideal for outdoor use, especially in harsh conditions, ensuring reliable performance whenever you need it. -
Question:
How does the locking mechanism of the Master Lock 377DAT work?
Answer: The locking mechanism of the Master Lock 377DAT features a simple yet effective design that utilizes a key entry system. When the key is inserted, it aligns the internal pins, allowing the shackle to release or secure. This mechanism is designed for reliability and robustness, ensuring that the lock remains secure until the correct key is used. Understanding this system is important for users to quickly and easily operate the lock, especially in urgent scenarios. -
Question:
Can I use the Master Lock 377DAT in extreme weather conditions?
Answer: Absolutely! The Master Lock 377DAT is engineered for resilience under various weather conditions. Its weather-resistant finish protects against moisture, making it suitable for both rain and snow. Additionally, the robust materials resist rust and corrosion, enhancing its longevity. Whether you’re securing a trailer in a winter storm or a summer downpour, this lock offers reliable protection, ensuring your trailer stays secure in any climate. -
Question:
What tools do I need to install the Master Lock MASTERLOCK 377DAT?
Answer: No special tools are required to install the Master Lock 377DAT. Simply align the lock with your trailer coupler and insert it into the coupler pinhole. Once in place, use the key to lock it securely. The user-friendly design ensures that installation takes only a few moments, making it accessible to anyone looking to improve trailer security quickly. This straightforward process is perfect when you need an immediate solution to safeguard your assets. -
Question:
Are replacement keys available for the Master Lock 377DAT?
Answer: Yes, replacement keys for the Master Lock 377DAT are typically available through authorized dealers or directly from Master Lock. If you ever misplace your keys, it's advisable to contact customer service for assistance in obtaining a replacement. Having a spare key can be a practical solution, especially if you frequently use the lock and want to avoid being locked out, ensuring that you maintain continuous access to your valuable equipment. -
Question:
What size couplers does the Master Lock 377DAT fit?
Answer: The Master Lock 377DAT is designed to fit a wide range of coupler sizes, typically accommodating 1-7/8 inch and 2 inch couplers. This versatility makes it suitable for a variety of trailers, from small utility models to larger boat trailers. Knowing the lock's compatibility with various sizes facilitates a seamless experience when switching between different trailers, ensuring optimal security across all your towing needs. -
Question:
Can I use the Master Lock 377DAT on both vehicle and trailer couplers?
Answer: Yes, you can use the Master Lock 377DAT on both vehicle and trailer couplers. Its universal design makes it an excellent choice for securing any standard coupler type. This flexibility means that whether you are attaching a trailer to a vehicle or searching for added security on different setups, the 377DAT provides a dependable locking solution, ensuring peace of mind wherever you travel with your trailer. -
Question:
Where can I buy the Master Lock MASTERLOCK 377DAT COUPLER LOCK UNIVERSAL in Saudi Arabia?
Answer: You can purchase the Master Lock MASTERLOCK 377DAT COUPLER LOCK UNIVERSAL on Ubuy. Ubuy provides a convenient online shopping experience, featuring a wide range of products including security locks. With reliable service and straightforward navigation, you can easily find and order the Master Lock 377DAT, ensuring you get the right product delivered to your doorstep.
MasterLock Hitch Locks 377DAT Editorial Review
### Editorial Review of the Master Lock MASTERLOCK 377DAT Coupler Lock The Master Lock MASTERLOCK 377DAT Coupler Lock has garnered positive feedback from customers who appreciate its robust security features and ease of use. Compared to previous trailer locks, users have noted that this model effectively covers the coupler hole, preventing unauthorized access and modifications. Unlike many traditional locks that can be cumbersome to install or require additional tools, the 377DAT stands out for its straightforward design—requiring only the key for operation. One of the most frequently mentioned advantages of this lock is its smooth operating mechanism, which simplifies the locking process and provides confidence in its reliability. Customers also admire its sturdy and attractive chrome-plated design, which doesn’t compromise aesthetics for performance. It is built to withstand Considerable force, making it suitable for harsh conditions—leading one customer to mention its durability under pressure from heavy machinery, a testament to its robust Construction. Several users explicitly highlighted the security aspect, especially after experiencing theft attempts with inferior locks, leading them to choose the Master Lock option. Tractors Supply's endorsement of this lock as a preferred security measure for their utility trailers further reinforces its reliability. While the overall reception is overwhelmingly positive, some users mentioned a minor downside: needing the key to both lock and unlock the unit, which can pose a risk if the key is misplaced. However, this hasn’t detracted significantly from overall user satisfaction. ### Pros and Cons **
Customer Reviews & Ratings
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Pros
- Excellent security features that effectively cover the coupler hole.
- Easy to install and operate with a smooth locking mechanism.
- Solid Construction that withstands heavy pressure and potential theft attempts.
- Attractive chrome-plated design enhances visual appeal.
- Endorsed by Tractor Supply, adding to its credibility.
Cons
- Requires the key for both locking and unlocking, which may lead to concerns about losing the key.
Platform Trust & Buyer Confidence
MA
Mekki
Verified buyer
“Arrive before time, excellent products”
9 July 2026 · via Trustpilot
FS
Farrah
Verified buyer
“A very big Thank you to HUDA and the Ubuy Team in helping to send my order to me yesterday!! Order # 62606425316 Customer service and operations is top for this online shopping company and I am very satisfied with the way they handle issues. THANK YOU once again!!”
25 June 2026 · via Trustpilot
AF
Anila
Verified buyer
“Good experience of shopping through Ubuy.”
16 June 2026 · via Trustpilot
MG
Mohamed
Verified buyer
“We feel very good about the delivery time, and the materials we received matched our order.”
14-Jul-26 · via Trustpilot
E
Essam
Verified buyer
“Perfect service and fast delivery.”
16-Jul-26 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SAR 129
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Features & Benefits
- Fits 1-7/8 in., 2 in., and most 2-5/16 in. trailer couplers.
- Ideal for securing vehicles, trailers, and RVs.
- Features an advanced locking mechanism for maximum security.
- Constructed from rust and corrosion-resistant zinc material.
- Includes one trailer coupler lock and two keys for convenience.
- Equipped with a ratcheting shaft to ensure versatile compatibility.
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