How to Get a Replacement Key for a Master Lock 389DAT Trailer Coupler Lock
Updated 11/05/2025 | Published 08/21/2023
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Question:
master coupler lock for trailer hitch 389DAT reploacement key????
asked by: Todd
0
Expert Reply:
For a replacement key for your Master Lock Trailer Coupler Lock # ML389DAT, you will use the Replacement Key for MasterLock Coupler Locks # MLK1.
You just need to put your key number in the key number box on the Replacement Key for MasterLock Coupler Locks # MLK1 page.
expert reply by:
Scott S
0
Product Page this Question was Asked From
Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers
- Trailer Tongue Lock
- Surround Lock
- Universal Application Lock
- Keyed Unique
- Fits 1-7/8 Inch Ball
- Fits 2 Inch Ball
- Fits 2-5/16 Inch Ball
- Master Lock
more information >
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Jack
11/5/2025
I have misplaced my keys for this lock and need to move my traier. Is there any way to determine my key number?