Gooseneck Trailer Lock with Two Lock Positions - Secure Red

In this review of the Aupar Patent-Designed Gooseneck Trailer Lock, the bottom line is simple: this is a practical, heavy-duty coupler lock for owners of 7-in bottom plate gooseneck trailers who want straightforward theft deterrence and a choice of two lock positions. The reviewer found it easiest to recommend to users who regularly hitch and unhitch trailers and need a robust metal lock with good corrosion resistance. Installation is generally simple and the special 2 hole structure is the standout feature that makes it more adaptable than fixed-position locks.

Key Features

• Special 2 Hole Structure: The two lock positions let the lock accommodate different trailer setups, reducing fiddling when aligning the coupler.
• Sturdy Material: Constructed from sturdy metal, the lock resists corrosion and holds up well in wet or salty environments.
• Enhanced Security: A special lock core structure provides stronger resistance to tampering compared with basic coupler pins.
• Versatile Fit: Designed for most 7-in bottom plate trailer couplers and adaptable to square or round couplers with tube diameter under 4.2 in.
• Peace of Mind Guarantee: The manufacturer encourages buyers to confirm fit ahead of purchase, which helps avoid returns and ensures the right application.

Who It's For

The lock is best for owners of gooseneck trailers who need a simple, durable locking solution that works with common 7-in bottom plate couplers. People who often leave trailers unattended at job sites, marinas or storage lots will appreciate the extra deterrent the special lock core provides.

It is less suitable for someone with an oversized or nonstandard coupler (tube diameter over 4.2 in) or buyers who need a keyed system that must match existing locks without prior size verification; the brand asks customers to confirm compatibility before ordering.

Pros & Cons

Pros

• Easy installation reported by multiple customers, saving time during hitching and unhitching.
• Solid, sturdy metal construction gives a durable feel and good corrosion resistance.
• Two lock positions increase versatility across different trailer setups.
• Lock core design offers enhanced theft deterrence compared with simple coupler pins.

Cons

• Fit receives mixed feedback; some buyers must verify dimensions to ensure compatibility with their coupler.
• May not fit couplers with tube diameters larger than 4.2 in, limiting use on oversized or custom setups.

Specifications

Brand	Aupar
Model type	Gooseneck Trailer Lock
Lock positions	Two-hole structure (2 positions)
Compatible couplers	Most 7-in bottom plate; square or round
Maximum tube diameter	Less than 4.2 in
Material	Sturdy metal with corrosion resistance

Our Verdict

The Aupar gooseneck coupler lock is a solid, practical choice for most owners of standard 7-in bottom plate trailers who want a durable lock with added versatility from two lock positions. It represents good value where fit is confirmed in advance, delivering reliable corrosion resistance and improved security for everyday towing scenarios.

Frequently Asked Questions

Will this lock fit my gooseneck coupler?
Check that your trailer uses a 7-in bottom plate and that the coupler tube diameter is under 4.2 in; confirming measurements with the seller is advised.

Is the lock corrosion resistant?
Yes, the lock is made from sturdy metal with corrosion resistance suitable for use in wet and harsh environments.

Can it deter theft effectively?
The special lock core structure increases resistance to tampering and serves as a meaningful deterrent compared with basic pins.