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10 Best Trailer Coupler Locks 2025 in the United States
#1
Winner
Master Lock 379ATPY Universal Trailer Hitch Lock , Black
The Master Lock 379ATPY Universal Trailer Hitch Lock is designed to secure a wide range of trailer couplers, including 1-7/8 in., 2 in., and most 2-5/16 in. sizes, making it versatile for use with vehicles, trailers, and RVs. The lock is constructed from zinc, providing resistance to rust and corrosion, which enhances its durability and weather resistance. Additionally, its advanced locking mechanism is engineered to resist picking and prying, adding an extra layer of security.
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Reese Towpower 7088300 Heavy Duty Coupler Lock , Grey
The Reese Towpower 7088300 Heavy Duty Coupler Lock is a robust and reliable choice for securing various types of trailers. Constructed with an aluminum body and a heavy-duty steel lock bar, it promises durability and strength. The universal fit design with 11 locking positions makes it compatible with 1-7/8-inch, 2-inch, and 2-5/16-inch couplers, covering a broad range of trailer types. This lock's bright yellow color enhances its visibility, acting as a theft deterrent, which is a significant advantage for security-conscious users.
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REESE Towpower 72783 Coupler Lock, Adjustable Storage Security, Heavy-Duty Steel, Yellow and Chrome
The REESE Towpower 72783 Coupler Lock is designed for those looking to secure their trailers with a heavy-duty, reliable lock. Its construction features a combination of aluminum for the body and heavy-duty steel for the lock bar, making it both sturdy and durable. The lock's ratchet design offers 11 adjustable positions, making it compatible with a variety of coupler sizes (1-7/8-inch, 2-inch, and 2-5/16-inch), which is a plus for versatility.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Top 10 Best Trailer Coupler Locks 2025 in the United States
#1
Winner
9.9 score
Master Lock 379ATPY Universal Trailer Hitch Lock , Black
Master Lock 379ATPY Universal Trailer Hitch Lock , Black
Material: Zinc
Locking Mechanism: Key Lock
Compatibility: 1-7/8 in., 2 in., most 2-5/16 in.
Weather Resistance: Resistant to rust and corrosion
Visibility: Black color
Chosen by 1182 this week
Reese Towpower 7088300 Heavy Duty Coupler Lock , Grey
Reese Towpower 7088300 Heavy Duty Coupler Lock , Grey
Material: Aluminum, Alloy Steel
Locking Mechanism: 11 positions, resist picking, prying, drill
Compatibility: 1-7/8, 2, 2-5/16 inch couplers
Weather Resistance: not immune to extreme weather
Ease of Use: easy to install, two keys
Visibility: bright yellow color
REESE Towpower 72783 Coupler Lock, Adjustable Storage Security, Heavy-Duty Steel, Yellow and Chrome
REESE Towpower 72783 Coupler Lock, Adjustable Storage Security, Heavy-Duty Steel, Yellow and Chrome
Material: Aluminum body, Steel lock bar
Locking Mechanism: Ratchet with 11 adjustable positions
Compatibility: 1-7/8, 2, 2-5/16-inch couplers
Ease of Use: Easy to install, two keys included
Visibility: Bright yellow color
Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT
Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT
Material: Chrome
Locking Mechanism: Advanced, Resists picking, Rekeyable
Compatibility: 1-7/8", 2", 2-5/16" couplers
Weather Resistance: Resists rust and corrosion
Ease of Use: Easy installation and removal
Visibility: Bright red finish
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Trimax - UMAX 100 - Trailer Lock for Hitch, Dual Purpose Transforms to U Lock - Trailer Hitch Lock for 1-7/8" - 2-5/16" Couplers, All Coupler Types
Trimax - UMAX 100 - Trailer Lock for Hitch, Dual Purpose Transforms to U Lock - Trailer Hitch Lock for 1-7/8" - 2-5/16" Couplers, All Coupler Types
Material: Reinforced steel
Locking Mechanism: Dual ratchet locking system
Compatibility: Most standard trailer couplers
Weather Resistance: Weatherproof with sealed keyhole cover
Ease of Use: Easy to install and use
Master Lock - (3 Keyed Alike Universal Trailer Coupler Locks 379KA-3
Master Lock - (3 Keyed Alike Universal Trailer Coupler Locks 379KA-3
Material: reinforced zinc die-cast
Locking Mechanism: resists picking, rekeyable cylinder
Compatibility: fits 1-7/8, 2, 2-5/16 inches
Weather Resistance: rust and corrosion resistance
Ease of Use: easy to install and remove
METOWARE Trailer Tongue Coupler Lock 1/4" Dia, 3-1/2" Span, Trailer Hitch Lock for Latch-Type Coupler, Black Trailer Pin Lock for Towing Trailer RV Car Boat Truck (1 Pack)
METOWARE Trailer Tongue Coupler Lock 1/4" Dia, 3-1/2" Span, Trailer Hitch Lock for Latch-Type Coupler, Black Trailer Pin Lock for Towing Trailer RV Car Boat Truck (1 Pack)
Material: Alloy Steel, Zinc
Locking Mechanism: Key Lock, Push-to-lock
Compatibility: Trailer, RV, Car, Boat, Truck
Weather Resistance: Water Proof, Rust Protection
Ease of Use: User-friendly, Push-to-lock design
Kohree Heavy Duty Trailer Coupler Lock, RV Trailer Locks fit 2-5/16 inches, 2", 1-7/8" Couplers, Durable Structural Steel Safety Tow Lock with 4 Keys & 4 Dust Covers, Orange
Kohree Heavy Duty Trailer Coupler Lock, RV Trailer Locks fit 2-5/16 inches, 2", 1-7/8" Couplers, Durable Structural Steel Safety Tow Lock with 4 Keys & 4 Dust Covers, Orange
Material: high-strength steel
Compatibility: 2-5/16, 2, 1-7/8 inches
Weather Resistance: rust-resistant
Ease of Use: Installation is quick, even one-handed
Visibility: bright orange
#10
7.8 score
RETRUE Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black
RETRUE Trailer Tongue Coupler Lock, Trailer Hitch Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler, Black
Material: High-strength zinc alloy
Locking Mechanism: Padlock-style, 1/4-turn activation
Compatibility: Latch-type couplers up to 3/4 inches
Weather Resistance: Weather Resistant
Ease of Use: Simple 1/4-turn activation
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Buying Guide for the Best Trailer Coupler Locks
When it comes to securing your trailer, a trailer coupler lock is an essential piece of equipment. It helps prevent theft by locking the coupler, making it difficult for anyone to hitch your trailer to their vehicle. Choosing the right trailer coupler lock involves understanding various specifications and how they align with your needs. Here are some key specs to consider when selecting a trailer coupler lock.MaterialThe material of a trailer coupler lock is crucial because it determines the lock's durability and resistance to tampering. Common materials include steel, aluminum, and heavy-duty alloys. Steel locks are generally the most robust and resistant to cutting or drilling, making them ideal for high-security needs. Aluminum locks are lighter and may be suitable for less demanding security requirements. Heavy-duty alloys offer a balance between strength and weight. Choose a material based on the level of security you need and the conditions in which the lock will be used.
Locking MechanismThe locking mechanism is the part of the coupler lock that secures it in place. There are various types, including key locks, combination locks, and pin locks. Key locks are straightforward and reliable, but you need to keep track of the key. Combination locks eliminate the need for a key but require you to remember a code. Pin locks use a pin that fits through the coupler, which can be very secure but may require more effort to install. Consider your preference for convenience versus security when choosing a locking mechanism.
CompatibilityCompatibility refers to how well the lock fits with your trailer's coupler. Trailer couplers come in different sizes and shapes, so it's important to choose a lock that matches your specific coupler type. Universal locks are designed to fit a wide range of couplers, making them versatile but sometimes less secure. Custom-fit locks are tailored to specific coupler designs and offer a more secure fit. Check the specifications of your trailer coupler and ensure the lock you choose is compatible.
Weather ResistanceWeather resistance is important if your trailer will be exposed to the elements. A weather-resistant lock will withstand rain, snow, and extreme temperatures without rusting or malfunctioning. Look for locks with protective coatings, such as zinc or powder coatings, which help prevent corrosion. If you live in an area with harsh weather conditions, investing in a weather-resistant lock can ensure long-term reliability and security.
Ease of UseEase of use refers to how simple it is to install and remove the lock. Some locks are designed for quick and easy installation, while others may require more effort and tools. If you frequently hitch and unhitch your trailer, a lock that is easy to use can save you time and hassle. Consider how often you will need to use the lock and choose one that fits your routine without compromising security.
VisibilityVisibility is an often-overlooked feature that can enhance the security of your trailer. High-visibility locks, often painted in bright colors like red or yellow, act as a deterrent to potential thieves by making it clear that the trailer is secured. If theft prevention is a primary concern, choosing a lock with high visibility can add an extra layer of protection.