The B&W Defender Gooseneck Trailer Coupler (GNC4250) sets a new standard for security and ease of use in gooseneck towing. Designed to simplify hookups while protecting your investment, the Defender combines automatic latching, an integrated keyed lock, and rugged American-made construction into one premium coupler.

The automatic latch system allows you to line up the ball, lower the trailer, and drive away—no manual latching required. A cone-shaped coupler design helps guide the coupler onto the ball for faster, easier hookups, even when alignment isn’t perfect. For added peace of mind, the integrated push-button keyed lock secures your trailer whether it’s coupled or uncoupled, helping prevent theft on the jobsite or in storage.

Built from heavy-duty steel and finished in a durable black powder coat, the B&W Defender is engineered for long-term reliability and rated for up to 25,000 lbs, making it ideal for work trailers, equipment haulers, and heavy towing applications.

Key Features

• Integrated Keyed Lock – Secures the trailer when hitched or unhitched

• Automatic Latch System – Drop onto the ball and go

• Cone-Shaped Coupler – Simplifies alignment and hookup

• 25,000 LB Gross Trailer Weight Rating

• Fits 2-5/16" Gooseneck Balls

• Heavy-Duty Steel Construction

• Durable Black Powder-Coated Finish

• Made in the USA

• Limited Lifetime Warranty

Specifications

• Part Number: GNC4250

• Brand: B&W Trailer Hitches

• Coupler Type: Gooseneck

• Ball Size: 2-5/16"

• Maximum Capacity: 25,000 lbs

• Latch Type: Automatic

• Receiver Tube Size: 4"

• Material: Steel

• Finish: Powder Coated

• Color: Black

• Estimated Install Time: ~30 minutes

Why Choose B&W Defender?

B&W Trailer Hitches are known for uncompromising quality and American craftsmanship. The Defender gooseneck coupler delivers unmatched convenience, built-in security, and the durability demanded by serious towing professionals.