Trailer Coupler Lock

SKU: 0976 Categories: ,



  • Coupler lock deters theft of your trailer that has a Bulldog Collar-Lok-style coupler
  • Heavy-duty bracket fits around your trailer’s coupler
    • Raised ball on platform sits inside of coupler
  • Steel pin slides through the bracket to secure the lock to your coupler
    • Padlock (sold separately) is required to secure pin in place
  • Aircraft-grade, lightweight aluminum construction is strong and resists wear and corrosion
  • Made in the USA


  • Application: most 1-7/8″, 2″, and 2-5/16″ Bulldog Collar-Lok-style couplers
  • Overall dimensions: 2-1/2″ long x 4-1/2″ wide x 5″ tall
  • Inside width: 3-3/16″
  • Pin diameter: 3/4″
  • Weight: 4-1/5 lbs