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Master Lock Adjustable Coupler Lock Stainless Steel Trailer Hitch 2847DAT

Based on 3,117 reviews
Condition: New
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$11.88
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Nov 14
Order within 17 hours and 22 minutes

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At a glance

Condition
New
Model
2847DAT
Dimensions
6.8 x 4 x 1 in
Weight
4 oz
Color
Silver
Material
tpu
Special Feature
durable, slim fit
In the box
MASTERLOCK

Features 5

  • Coupler lock has stainless steel components for corrosion resistance
  • Fits coupler latch widths up to 2-3/4 inches
  • Weather touch seal protects keyway and shaft from dirt and moisture
  • Shaft end is ergonimically designed to aid instailation

Description

Designed for easy operation. After closing coupler latch, insert the shackle through the hole in the latch. Place lock body onto shackle and slide until tight against coupler latch. Lock and remove key. Includes 2 keys.

Specs 29

Brand Master Lock
Special Feature durable, slim fit
Lock Type Key Lock
Item dimensions L x W x H 6.8 x 4 x 1 inches
Material tpu
Brand Name Master Lock
Recommended Uses For Product Vehicles, trailers, RV hitch locks
Number of Pieces 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


As described
Style: Coupler Lock
Good quality. Works as described for what I bought it to use it for. I have three of these and if I need another id buy this again
Reviewed in the United States on September 4, 2026 by Gary

Convenient Trailer Lock for Stress-Free Travels
Style: Coupler Lock
Securing our rented uHaul trailer for our week-long trip was a top priority for me. I needed something reliable that would allow me to disconnect without worries while we explored our destinations. The trailer lock I found was not only affordable but also incredibly effective. It provided me with the peace of mind I needed, knowing that our belongings were safe from potential theft. Additionally, its user-friendly design made it a breeze to use, adding convenience to our travel experience. Highly recommend this product for anyone looking for a simple yet efficient solution to safeguard their trailer during trips. ... show more
Reviewed in the United States on July 30, 2025 by jose santiago

Good lock
Style: Coupler Lock
Works as expected!
Reviewed in the United States on August 15, 2026 by David Monroe

Cut shaft to length. Works well to keep coupler closed, not to stop theft.
Style: Coupler Lock
This item is not to stop a thief but it should keep the coupler from opening unexpectedly. There are many heavy duty locks that will stop theft but the shaft on this has a small diameter so it fits into the coupler holes. I used a saw and a file to shorten and smooth the shaft so that I don't hurt myself on the protruding end or bend it which would make it hard to remove. ... show more
Reviewed in the United States on July 14, 2026 by Best Customer

Handy lock for my small trailer
Style: Coupler Lock
I bought this coupler lock for my small utility trailer that i use for hauling design gear to client shoots. It slips over the latch easily and I like the 6 positions since my old latch is a bit chewed up from years of use. The stainless finish looks good and hasn’t rusted yet after a few rainy weekends in the driveway. I can lock and unlock it one-handed while holding a camera case in tge other, which is exactly what i needed. My only gripe, the keys feel a little thin and cheap, so I’m babying them and keeping a spare on my desk in the studio. ... show more
Reviewed in the United States on August 1, 2026 by Helen Ostrander

Great for locking a Ketter tool shed!
Style: Coupler Lock
Using this as a tool shed lock and it seems to work just fine. Its been getting rained on for the last couple of weeks and still opens and closes with no issues. I was worried after seeing the video review of the lock coming off by just pulling on it, but that must be an isolated incident because i tried pretty hard to do that and couldn't replicate it. I will update if that changes but for now, its a 5/5 from me. ... show more
Reviewed in the United States on August 18, 2026 by J

Nice repeat buy for my studio
Style: Coupler Lock
I grabbed this for my home design studio, just to keep my gear setup consistent. I own three now and each one works the same every time I plug in for client work. I like that I don’t have to fiddle or troubleshoot. If I need a fourth, I’ll stick with this.
Reviewed in the United States on September 23, 2026 by retta salas

I feel better parking my little trailer off campus now
Style: Coupler Lock
I grabbed this coupler lock for my tiny utility trailer that i keep near the dorm lot. I was always low‑key worried some random truck would just hook it up and dip. This thing fits my 2 inch ball coupler tight and doesn’t rattle around. I just slide it into place, pick a hole that lines up, then snap the latch and it’s done 🔐. The stainless feels tough, not cheap. We had a gross rainy week and it sat outside the whole time. No rust spots, the key still turns smooth. I like that it has a few different holes so I can also use it on my friend’s slightly wider trailer when we do weekend Ikea runs. One night we came back super late from a concert and I was half asleep. I was honestly glad I didn’t have to mess with chains or anything. Just unlock, pop it off, toss it in the trunk, go crash. Tiny thing but it makes me feel like my stuff’s actually locked down when I’m in class. For the price, this little chunk of metal makes my parking lot feel way less sketchy 😅. ... show more
Reviewed in the United States on September 28, 2026 by Beth K. Finley
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