{"product_id":"bw-defender-locking-gooseneck-coupler-2-5-16-in-gnc4250","title":"B\u0026W Defender Locking Gooseneck Coupler, 2-5\/16\", 25,000 lb GTW, Keyed Lock, Black (GNC4250)","description":"\u003cp\u003eThis is the coupler that goes on the trailer, the part that drops over the gooseneck ball in your truck bed, and B\u0026amp;W rebuilt it around two ideas. The first is that hooking up should take one movement: line the ball up, lower the trailer, and the automatic latch closes, with a cone-shaped mouth doing the fine alignment so you are not shuffling the truck back and forth for the last inch. The second is that a gooseneck trailer parked anywhere is currently a trailer anyone with a truck can take. The Defender has a push-button keyed lock built into the coupler, and it locks whether the trailer is coupled to your truck or standing on its own, so you can secure a trailer at a jobsite, at a campground or on your own driveway without hanging a separate coupler lock on it and hoping. Rated 25,000 lb gross trailer weight and 7,500 lb vertical tow weight with its 2-5\/16\" ball socket. It fits standard gooseneck trailer tubing and is a replacement for the coupler your trailer came with, so it is a trailer modification rather than a truck accessory.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eB\u0026amp;W Defender locking gooseneck coupler\u003c\/li\u003e\n\u003cli\u003eKeys for the integrated push-button lock\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"embed-container\" style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/8pIsI_LaH0s\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Lock Is Part of the Coupler\u003c\/strong\u003e\u003cbr\u003eA push-button keyed lock is built into the body rather than hung off it. That matters because an add-on coupler lock is a visible, attackable object; an integrated lock has nothing to cut off. It works coupled or uncoupled, so the trailer is secured on your ball and secured sitting on its jack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAutomatic Latch\u003c\/strong\u003e\u003cbr\u003eLine up the ball, lower the trailer, and you are latched. There is no lever to throw and no sequence to remember, which removes the failure mode where somebody hooks up in the dark, thinks it is latched and finds out at the first turn.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Cone That Does the Aiming\u003c\/strong\u003e\u003cbr\u003eThe mouth of the coupler is cone shaped, so it guides itself onto the ball from an imperfect position. Anyone who has backed a gooseneck alone on gravel understands what that is worth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e25,000 lb GTW and 7,500 lb VTW\u003c\/strong\u003e\u003cbr\u003eThose are this coupler's ratings on its 2-5\/16\" socket. Your truck's gooseneck rating, your trailer's own rating and the ball in the bed all carry their own numbers, and the lowest of them governs what you can legally and safely tow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Theft Deterrent You Will Actually Use\u003c\/strong\u003e\u003cbr\u003eSecurity that takes effort gets skipped. This one is a button and a key at the point you are already standing, which is the difference between a trailer that gets locked every time and a chain in the toolbox that never comes out.\u003c\/p\u003e\n\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;margin:8px 0 4px;border:1px solid #e6e6e6;border-radius:8px;\"\u003e\u003ctable style=\"display:table;width:100%;margin:0;border-collapse:separate;border-spacing:0;border:none;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#ba232a;color:#ffffff;text-align:left;padding:12px 14px;font-weight:700;border:none;\"\u003eWhat It Fits\u003c\/th\u003e\n\u003cth style=\"background:#ba232a;color:#ffffff;text-align:left;padding:12px 14px;font-weight:700;border:none;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eMounts on\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e The trailer, replacing the existing gooseneck coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;font-weight:600;\"\u003eBall size\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e 2-5\/16\" gooseneck ball\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eGross trailer weight\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e Up to 25,000 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;font-weight:600;\"\u003eVertical tow weight\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e Up to 7,500 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eTruck year, make and model\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#ba232a;font-weight:700;\"\u003e✗\u003c\/span\u003e Not a factor; this is a trailer part\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#faf7f7;border-left:4px solid #ba232a;border-radius:0 8px 8px 0;padding:14px 16px;margin:12px 0;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eFit guidance:\u003c\/strong\u003e This is a trailer part, not a truck part, so there is no year, make and model list. What it has to match is your trailer's gooseneck tube and your truck's ball: it is built for a 2-5\/16\" ball, which is the common heavy gooseneck size. Fitting it means replacing the coupler currently on your trailer, so measure your gooseneck tube and read B\u0026amp;W's installation instructions before ordering. If your trailer is a fifth wheel rather than a gooseneck, this is not the product; B\u0026amp;W's fifth wheel to gooseneck adapters are what convert that.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eB\u0026amp;W Part Number:\u003c\/b\u003e GNC4250\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat It Is:\u003c\/b\u003e Locking gooseneck coupler, mounts on the trailer\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBall Size:\u003c\/b\u003e 2-5\/16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGross Trailer Weight:\u003c\/b\u003e 25,000 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVertical Tow Weight:\u003c\/b\u003e 7,500 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLock:\u003c\/b\u003e Integrated push-button keyed lock, works coupled or uncoupled\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLatch:\u003c\/b\u003e Automatic, closes when the trailer is lowered onto the ball\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCoupler Mouth:\u003c\/b\u003e Cone shaped, self-aligning\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShipping Weight:\u003c\/b\u003e About 42 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 843233002355\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty:\u003c\/b\u003e B\u0026amp;W Lifetime Exclusive Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMade In:\u003c\/b\u003e Made in the USA, built by B\u0026amp;W in Humboldt, Kansas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Replaces the existing coupler on the trailer's gooseneck tube  ·  \u003cb\u003eTime:\u003c\/b\u003e Allow a couple of hours  ·  \u003cb\u003eTools:\u003c\/b\u003e Depends on how the existing coupler is attached; welding may be involved  ·  \u003cb\u003eDifficulty:\u003c\/b\u003e Intermediate to advanced, and it is a structural part of the trailer\u003c\/p\u003e\n\u003cp\u003eThis is the part your trailer hangs from, so it is not a job to improvise. Support the gooseneck properly before removing the old coupler, follow B\u0026amp;W's instructions for this part number exactly, and if the installation calls for welding, have it done by someone who welds for a living. Test the latch and the lock with the trailer empty before you load it.\u003c\/p\u003e\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cp\u003eEverything you need for your B\u0026amp;W Defender Locking Gooseneck Coupler, 2-5\/16\", 25,000 lb GTW, Keyed Lock, Black, in one place.\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/bw-GNC4250_pn_4250-020_07_17_2025.pdf?v=1786358441\" target=\"_blank\" rel=\"noopener\" title=\"Download the B\u0026amp;W Trailer Hitches installation guide that covers this product, with step-by-step mounting instructions and hardware details\" style=\"color:#ba232a;font-weight:700;text-decoration:underline;\"\u003eB\u0026amp;W Defender Locking Gooseneck Coupler Installation Instructions (GNC4250) (PDF)\u003c\/a\u003e, the manufacturer's step-by-step guide covering mounting, included hardware and adjustment.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eWarranty, Shipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty.\u003c\/strong\u003e B\u0026amp;W covers this product with its Lifetime Exclusive Limited Warranty. B\u0026amp;W warrants its products to the original consumer purchaser, for as long as that purchaser owns the product, against defects in material and workmanship. The remedy is replacement, or repair or a full refund at B\u0026amp;W's option. Installation and removal labor, shipping costs, and damage caused by misuse, overloading, alteration or improper installation are not covered. Warranty service goes directly through B\u0026amp;W at 800-248-6564, which issues a return authorization before anything is sent back. B\u0026amp;W states that it does not authorize dealers or distributors to create any other warranty, so what is described here is B\u0026amp;W's own coverage and nothing has been added to it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping.\u003c\/strong\u003e This item ships free to the lower 48 states. Because it is an oversized item, it ships by freight and typically arrives in 3 to 7 business days.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInspect on delivery.\u003c\/strong\u003e Please inspect the packaging before signing. If you see any damage, note it on the delivery receipt and contact us right away, and we will make it right.\u003c\/p\u003e\n\u003ch3\u003eAbout B\u0026amp;W Trailer Hitches\u003c\/h3\u003e\n\u003cp\u003eB\u0026amp;W Trailer Hitches started in 1987 in a Humboldt, Kansas garage, where Roger Baker and Joe Works built the first Turnoverball gooseneck hitch. The idea was simple and nobody else had done it: a gooseneck ball that turns over and stores flush with the bed floor, so the truck bed goes back to being a truck bed the moment you unhook. That one product built the company, and B\u0026amp;W still makes its hitches in Humboldt, in a plant that has grown to about 600,000ft². The company has been 100% employee-owned since 2007, with roughly 500 employee-owners who have a stake in what comes off the line.\u003c\/p\u003e\n\u003cp\u003eThe testing story is worth knowing, because it is not how the rest of the industry does it. SAE J-2638, the standard for gooseneck and fifth-wheel hitches, is a recommended practice, and it is common to satisfy it with a fresh sample for each test. B\u0026amp;W runs a single hitch through all three 300,000-cycle dynamic tests and the six static tests, one after another, on the same unit. The Tow \u0026amp; Stow line is tested to SAE J-684. Every B\u0026amp;W-brand product is covered by the company's Lifetime Exclusive Limited Warranty to the original consumer, against defects in material and workmanship, for as long as that person owns it.\u003c\/p\u003e\n\u003cp\u003ePrestige Truck is an authorized B\u0026amp;W dealer. Every B\u0026amp;W product we ship is new, in the factory carton, and backed by B\u0026amp;W's own warranty and its US-based support team in Humboldt, Kansas.\u003c\/p\u003e","brand":"B\u0026W Trailer Hitches","offers":[{"title":"Default Title","offer_id":49106915950836,"sku":"GNC4250","price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/bw-defender-locking-gooseneck-coupler-gnc4250-studio-socket-view.png?v=1786363845","url":"https:\/\/prestigetruck.com\/products\/bw-defender-locking-gooseneck-coupler-2-5-16-in-gnc4250","provider":"Prestige Truck","version":"1.0","type":"link"}