Master Lock Universal Trailer Coupler Lock
- Brand:
- Master Lock
- Model Number:
- 389DAT
- UPC:
- 071649263019
- EAN:
- 0071649263019
- Walmart SKU:
- 455575784
Key Takeaway
Price momentum shifted downward , bringing the cost to $32.49. This represents a 0.0% discount to typical levels.
Third-Party Seller Summary
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$44.99 | |
|
Lowest Price
|
$34.21 | |
|
Most Recent Price
|
$44.99 |
- Average Price
- $42.33
- First Tracked
- Last Update
Walmart.com Summary
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$34.56 | |
|
Lowest Price
|
$24.99 | |
|
Most Recent Price
|
$32.49 |
- Average Price
- $34.17
- First Tracked
- Last Update
Price Analysis
Tracking History: We have tracked Master Lock Universal Trailer Coupler Lock since 7/9/2025. The most recent price update was on Oct 8, 2026.
Price Range: Over the past 90 days, the price has ranged from $24.99 (lowest on 7/9/2025) to $34.56 (highest on 9/8/2025). The average price during this period is $34.17.
Current Trend: Walmart.com prices have ranged from $32.49 (Oct 8) to $32.49 (Oct 8) over the past 90 days. Current price is close to the 90-day average of $32.49.
Customer Insights: Rated 4.5/5 from 196 reviews.
Customer Reviews
196 reviewsCustomer Reviews
4.5
Based on 196 reviews
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Showing 10 of 196 reviews
Good product a the right price.
I bought this a few weeks ago and it has served me well. The price was right and it is easy to use on several of my trailers.
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Great deal!
Works perfectly! It's just a little bulky, but I guess it needs to be so it is harder for someone to cut through it and steal my trailer. It is very sturdy and well made. A value purchase.
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Master Universal Trailer Coupler Lock Model 389DAT
I'm very pleased with my new trailer lock It is very simple to install, light weight and affordable. It also carries the Master Lock name that we've all come to trust for security!
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Great Lock For Price
Nice. Adjustable, fits my cargo trailer tight when locked. Just light any lock, it is for deterrence only. NO LOCK IS 100% THEFT PROOF. If someone wants it they will get it. This lock is only 1 of 4 steps I use to protect my trailer.
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Peace of mind and easy to use
Bought this for my boat trailer. We are not in a neighborhood or near busy streets, but we do leave the boat in our driveway, unattended, during the week. This coupler lock was super easy to use, looks pretty durable, and definitely gives me added piece of mind.
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Master Trailer Lock
Love the product. Would buy again!
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Best trailer lock ever!
It works so good! Now only my friends can steal my trailer!
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Go to plan B
Plan “A” was to use this lock on a 2 5/16” ball size travel trailer tongue but the lock width is too narrow, so I went to plan “B” and used the lock on a 2” Bulldog utility trailer. No problem!
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OK but
The lock works great, however, I have two trailers. It works great on one but the other one is a bulldog hitch and the lock isn't deep enough to get into the opening for the bulldog hitch
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worth the price
this is not the highest quality trailer lock I have but for the price I think it is very acceptable.
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Price History
Recent Price Changes
Detailed price history for the past 90 days
Walmart.com Pricing
10 recordsWalmart.com prices have ranged from $32.49 (Oct 8) to $32.49 (Oct 8) over the past 90 days. Current price is close to the 90-day average of $32.49.
| Date | Price | Change | % Change |
|---|---|---|---|
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | $+0.00 | +0.0% | |
| $32.49 | — | — |
Third-Party Seller Pricing
60 recordsThird-Party Sellers prices have ranged from $37.86 (Aug 24) to $44.99 (Sep 25) over the past 90 days. Current price is close to the 90-day average of $43.06.
| Date | Price | Change | % Change |
|---|---|---|---|
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $+0.00 | +0.0% | |
| $38.24 | $+0.00 | +0.0% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $+0.00 | +0.0% | |
| $38.24 | $-6.75 | -15.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $+0.00 | +0.0% | |
| $38.24 | $-5.93 | -13.4% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+6.75 | +17.7% | |
| $38.24 | $+0.38 | +1.0% | |
| $37.86 | $+0.00 | +0.0% | |
| $37.86 | $-6.31 | -14.3% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+7.13 | +18.8% | |
| $37.86 | $-7.13 | -15.8% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | $+0.00 | +0.0% | |
| $44.17 | $-0.82 | -1.8% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.00 | +0.0% | |
| $44.99 | $+0.82 | +1.9% | |
| $44.17 | — | — |
