{"product_id":"master-lock-387ka-3416-king-pin-trailer-lock","title":"Master Lock 387KA-3416 King Pin Trailer Lock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MASTER LOCK 387KA-3416 is a king pin lock designed to secure semi-trailer fifth-wheel coupling points. It locks directly onto the trailer king pin, preventing unauthorized coupling and deterring theft or accidental hookup in yard and staging environments. The lock body is constructed from aluminum, keeping overall weight manageable while maintaining structural integrity at the coupling interface. At 6.5 pounds, it is a heavy-duty mechanical security device intended for installation by fleet operators, yard workers, and transportation professionals working with standard semi-trailer configurations.\u003c\/p\u003e\n\u003cp\u003eThis king pin lock is used on semi-trailers in commercial freight, logistics, and transportation applications. It is suited for yard storage security, drop-and-hook operations, and any scenario where a trailer must remain stationary and uncoupled. Typical use cases include distribution center yards, truck terminals, and fleet staging areas where trailers are left unattended for extended periods. The lock engages the king pin directly, requiring no additional hardware or tools beyond what comes with the unit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum construction reduces weight while providing durable protection at the king pin\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for semi-trailer king pin applications\u003c\/li\u003e\n  \u003cli\u003ePrevents unauthorized fifth-wheel coupling when trailer is parked or staged\u003c\/li\u003e\n  \u003cli\u003eKeyed configuration (KA designation indicates keyed alike) for fleet key management\u003c\/li\u003e\n  \u003cli\u003eCompact, self-contained unit with no additional mounting hardware required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard fitment for semi-trailers equipped with conventional king pins used in fifth-wheel coupling systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by fleet maintenance personnel or yard operators and requires no special tools. Ensure the trailer is fully uncoupled and stationary before engaging or removing the lock. Inspect the king pin for damage or wear before installing the lock to confirm a secure fit. Follow all applicable DOT and fleet security guidelines when using king pin locks for trailer immobilization.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Trailer King Pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHitch Accessories Type\u003c\/strong\u003e: King Pin Lock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MASTER LOCK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 387KA-3416\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MASTER LOCK","offers":[{"title":"Default Title","offer_id":51540800307506,"sku":"387KA-3416","price":171.18,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/08e13449537d22ce4d2751d01b6c853c.jpg?v=1785864134","url":"https:\/\/voomisupply.com\/products\/master-lock-387ka-3416-king-pin-trailer-lock","provider":"Voomi Supply","version":"1.0","type":"link"}