Master Lock 2848DAT + 379ATPY Hitch Lock Set - Secure Trailer

In this review of the Master Lock 2848DAT receiver and coupler latch set bundled with the 379ATPY universal trailer hitch lock, the bottom line is simple: this kit is aimed at vehicle and RV owners who need a compact, weather-resistant way to secure a trailer or hitch. The biggest reason to buy is convenience combined with corrosion resistance - the receiver uses a Push to Lock mechanism for fast use while a Weather Tough seal and watertight cap protect internal parts from moisture and dirt. For everyday towing security and easy operation, this pair covers the most common hitch sizes and adds a single-key convenience.

Key Features

• Push to Lock receiver: The receiver lock uses a Push to Lock locking mechanism so you can secure the pin quickly without fiddling with the key each time.
• Adjustable coupler latch: The stainless steel coupler latch lock adjusts from 9/16 in to 2-3/4 in, giving flexibility across different latch assemblies.
• Universal hitch lock fit: The 379ATPY trailer hitch lock fits 1-7/8 in, 2 in and most 2-5/16 in couplers to cover common trailer coupler sizes.
• Weather resistance: The Weather Tough seal and watertight cap on the receiver help keep moisture and dirt out, extending service life in wet conditions.
• Corrosion-resistant materials: Stainless steel receiver components and a zinc-constructed hitch lock resist rust and corrosion for outdoor use.
• Single-key convenience: The bundle is keyed alike so both locks operate with one key, reducing hassle when locking and unlocking.

Who It's For

This set is a practical pick for owners of trailers, tow vehicles and RVs who want straightforward theft deterrence for everyday use. The Push to Lock receiver and adjustable coupler latch suit people who frequently hitch and unhitch and need a compact, reliable locking set that works in tight spaces.

Those who need ultra-high security against determined theft attacks or who require specialized locks for nonstandard couplers should look elsewhere; heavy-duty retriever-proof or chain-based security systems offer greater resistance to aggressive cutting or prying than this convenience-focused set.

Pros & Cons

Pros

• Easy Push to Lock operation on the receiver makes daily use quick and simple.
• Weather Tough seal and watertight cap protect internal parts from moisture and dirt.
• Adjustable coupler and universal hitch lock fit the most common coupler sizes, offering versatility.
• Keyed alike design provides single-key convenience for both locks.

Cons

• While generally well built, some users report occasional breakage under force, so it is not a substitute for heavy-duty security measures.
• May not satisfy users seeking the highest level of cut or pry resistance for high-risk storage locations.

Specifications

Bundle contents	Receiver & coupler latch lock set and universal trailer hitch lock
Receiver pin usable length	2-3/4 in
Receiver fit	Stainless steel lock fits 1/2 in and 5/8 in receiver openings
Coupler latch adjustment	Adjusts from 9/16 in to 2-3/4 in
Trailer hitch fit	Fits 1-7/8 in, 2 in and most 2-5/16 in couplers
Construction materials	Stainless steel receiver; zinc trailer hitch lock

Our Verdict

The Master Lock 2848DAT and 379ATPY bundle is a sensible value for most trailer owners who prioritize ease of use, weather protection and common-size compatibility. It is best for everyday towing and short-term parking locations where convenience and rust resistance matter more than maximal forced-entry resistance. For many users, the keyed-alike convenience and Push to Lock receiver make it a practical, affordable security upgrade.

Frequently Asked Questions

Will one key open both locks?
Yes, the set is keyed alike so the same key operates the receiver/coupler pair and the hitch lock for convenient access.

What coupler sizes does the hitch lock fit?
The universal trailer hitch lock fits 1-7/8 in, 2 in and most 2-5/16 in couplers.

Is the set weather resistant?
The receiver features a Weather Tough seal and watertight cap, and materials like stainless steel and zinc help resist rust and corrosion for outdoor use.