Trailer 
Coupler Locks

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Masterlock 2847DAT 
Masterlock
377DAT
Coupler Lock		 Masterlock
379AT
Coupler Lock		 Masterlock
Coupler Latch Lock		 Masterlock
Stainless Adjustable
Coupler Lock 
Masterlock 2989at
Masterlock
Barbell Series
1471DAT		 Xena Bullett
XTL Alarmed Coupler Lock		 Masterlock 2989AT
Gooseneck Lock		 Masterlock
378DAT
Coupler Lock

Masterlock 2878DAT Coupler Latch Lock
Masterlock 2878DAT 
  • 7/8" shackle fits most popular trailer coupler latch widths
  • Keyway cover keeps out moisture, dirt, and corrosion
  • Ergonomic handle
  • Limited lifetime warranty

 

Our price
$ 7.95

Masterlock 2847DAT 
Adjustable Coupler Lock
Masterlock 2847DAT Coupler Lock 
  • Stainless steel adjustable coupler latch lock
  • (6) locking positions from 9/16" to 2-3/4"
  • Water tight cap protects lock from moisture and dirt
  • Re-keyable* cylinder for keyed alike convenience
Our Price
$ 7.95

* Re-keyable by most lock smiths

Masterlock 379ATPY - Universal Coupler Lock
  • Guards against trailer tow-away theft
  • Fits Couplers 1-7/8" (48mm), 2" (51mm) & 2 5/16" (59mm) - Reese, Fulton, Valley, Atwood, Shelby, Putnam, Hammerblow, Dutton Lainson, UFP.
  • Advanced locking mechanism resist picking and prying.
  • Chrome plated for improved wear and corrosion resistance
  • Easy to install and remove
  • Limited Lifetime Warranty
Our Price
$ 28.95

Masterlock 1471DAT 
Barbell Series Coupler Lock
Masterlock 1471 Barbell Coupler lock 
  • Guards against trailer tow-away theft
  • 9/32" (7mm) x 3 1/2" (9cm) pin fits UFP ™ and Surge Brake Couplers
  • Weather though seal and Water tight cap protects lock>
  • Chrome plated for improved wear and corrosion resistance
  • Solid brass lock cylinder and cylinder case offer extreme corrosion resistance
  • Precision 4-pin tumbler mechanism resists picking
Our Price
$ 12.95

Masterlock 377DAT  Coupler Lock
  • Guards against trailer tow-away theft
  • Fits 1-7/8", 2" & most 2 5/16" Couplers
  • Advanced locking mechanism resists picking and prying
  • Easy to install and remove
  • Chrome plated for improved rust and corrosion resistance
Our Price
$ 27.95

Masterlock 378DAT - Coupler Lock
  • Front access keyway
  • Fits most 2-5/16" (59mm) ball diameter couplers.
  • Advanced locking mechanism resists picking
  • Rust and corrosion resistant
Our Price
$ 34.95
Will fit most couplers of the following brands: Atwood, Reese, Fulton, Shelby, Valley, Dutton-Lainson, Putnam, Ideal, Acme.

Masterlock 2989AT  Fifth Wheel - Gooseneck
Coupler Lock
Masterlock 2989AT

Dimensions: 12-1/4" long x 6-1/2" wide x 5-1/2" tall
Limited lifetime warranty

This heavy duty Masterlock 2989AT Gooseneck / 5th wheel / king pin lock will prevent someone from simply hooking up and tow your travel trailer away. 2989AT will fit on most popular gooseneck couplers as well as many (lunette eye) Pintle ring hitches.

  • Fits both Fixed and Adjustable style Gooseneck /Fifth Wheel Style Trailer Couplers
  • Fits 3" Lunette Rings and King Pin
  • Laminated steel frame construction for reliable performance
  • Powder Coated finish resists corrosion
  • Re-keyable Python Cylinder
  • Easy to install and remove
  • Keyway cover protects lock from moisture and dirt
Our Price
$ 79.95
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