SB316XL gooseneck trailer coupler for a flatbed truck with a 16 inch extension and a 4 inch square trailer stem.
SB316XL is a 16 inch extended gooseneck trailer coupler for a flatbed truck with a 4 inch square trailer stem. The picture above is of a 9 inch extended coupler for a flatbed truck but will give you an idea what a 16 inch will look like.
This is a non-stock item, but at times we may have one in stock. If not in stock it will take 10 days to 2 weeks to be manufactured.
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