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B&W GNC4250 Gooseneck Defender Locking Coupler

Brand: B&W
Part Number: GNC4250
Product Type: Defender Locking Coupler
Condition: New
Shipping: Flat Rate Shipping
Was: $453.33
Sale: $340.00
Save: 25%
Save: $113.33



We've reinvented the coupler on this one. With built-in security features and unrivaled ease of use, the Defender makes towing incredibly easy and is a great theft deterrent.


  • Locking gooseneck coupler without outer tube
  • For use with 2 5/16" balls
  • 4" round
  • Push button keyed lock
  • Automatic latch
  • Cone shaped coupler
  • 25000 lb GTW
  • 7500 lb VTW
  • Limited lifetime warranty

Vehicle Fitment 

This part is universal

Technical Files 

Installation Instructions



Shipping Information

  • Item Requires Shipping
  • 50.0 lbs.
  • W1.0000” x H1.0000” x L1.0000”
  • $19.95
  • Flat Rate Shipping

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