Exterior Components› Truck Bed and Trunk Components

Master Lock

COUPLER LOCK UNIVERSAL

$42.78

SKU: M014 379DAT

In Stock
In Stock
Ships by Aug 7
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

COUPLER LOCK UNIVERSAL

MIA's Description

The Master Lock 379DAT is a universal trailer coupler lock designed to fit 1-7/8in, 2in, and most 2-5/16in couplers. Its advanced locking mechanism resists picking and prying. This lock is easy to install and remove, and it is resistant to rust and corrosion.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMaster Lock
Part NumberM014 379DAT

Videos

Unboxing & Overview: Master Lock Universal Trailer Coupler Lock

Unboxing & Overview: Master Lock Universal Trailer Coupler Lock
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[1356] A Master Lock I Should FEAR?!? Model 377 Trailer Lock
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Harbor Freight Universal Trailer Lock
About Master Lock Universal Trailer Coupler Lock

About Master Lock Universal Trailer Coupler Lock
GARBAGE - MasterLock Universal Trailer Coupler Lock - 389DAT

GARBAGE - MasterLock Universal Trailer Coupler Lock - 389DAT
About Master Lock Push to Lock™ Receiver Locks

About Master Lock Push to Lock™ Receiver Locks
[941] Tow Smart Trailer Coupler Lock Bypassed FAST

[941] Tow Smart Trailer Coupler Lock Bypassed FAST
RETRUE Universal Coupler Lock | Heavy-Duty Trailer Hitch Lock

RETRUE Universal Coupler Lock | Heavy-Duty Trailer Hitch Lock
[1490] When Quantity Adds Quality: Curt Trailer Lock

[1490] When Quantity Adds Quality: Curt Trailer Lock

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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