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Proven Industries

4.5 (123)

Model GRB-78 for Bulldog or Ram Brand Gooseneck Couplers

Name: Proven Industries Model GRB-78 for Bulldog or Ram Brand Gooseneck Couplers - Model GRB-78 for Bulldog or Ram Brand Gooseneck Couplers
Brand: Proven Industries
SKU: 15133091332162
Price: 250.0 USD
Availability: InStock
Rating: 4.7606 (61 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$250.00

Quantity

Color

Black

Quantity

Description

Description Model GRB-78 will fit your Ram or Bulldog gooseneck trailer coupler. Please refer to the coupler fit image above to confirm that you have a Ram or Bulldog gooseneck coupler.
**Please note that this lock is not compatible with ...

Reviews

4.8

71 ratings

This is my second lock purchase from Proven Industries. These locks are the toughest in the industry and are worth every penny!

Roderick · June 1, 2026

GRB-78

The first one fit great on my goose neck diamond c equipment trailer. Second one liked a 1/8th inch of fitting on my diamond c goose neck dump trailer so I cut a v in bottom section top back plate that hit the gooseneck cylinder and would not let the lock side go up to be able to slide lock plate on. After the v cut put on bottom plate slid on enough to go up with lock side then mated the top lock plate bottom to side plate lined holes up and good to go! Other than that love these locks. Thank y’all.

Chris · May 7, 2026