{"product_id":"master-lock-universal-trailer-coupler-lock-379ka-keyed-alike","title":"Master Lock Universal Trailer Coupler Lock 379KA - Keyed Alike","description":"\u003cp\u003eOur review of the Master Lock Universal Trailer Coupler Lock 379KA finds it best suited for trailer owners who need a simple, reliable way to prevent tow-away theft. The single biggest reason to buy is straightforward: it offers broad fitment for 1-7\/8 in, 2 in, and 2-5\/16 in couplers while using an advanced locking mechanism that resists picking and prying. Installation and removal are easy, and the keyed alike option makes it practical for users managing multiple trailers or hitches without juggling multiple keys.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUniversal Fit:\u003c\/strong\u003e Fits 1-7\/8 in, 2 in, and 2-5\/16 in couplers so one lock covers most common trailer tongues.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAdvanced Locking Mechanism:\u003c\/strong\u003e The lock resists picking and prying, improving security for unattended trailers.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKeyed Alike Convenience:\u003c\/strong\u003e Sold keyed alike so two or more locks can be operated with the same key, easing management of multiple trailers.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Weighing 2.4 lbs, the lock is built to feel substantial and resists rust and corrosion for outdoor use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRekeyable Design:\u003c\/strong\u003e The mechanism is rekeyable through an authorized Master Lock locksmith for users who want to change keys later.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLifetime Warranty:\u003c\/strong\u003e Limited lifetime warranty provides long-term assurance against defects and manufacturing issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 379KA is ideal for owners of utility, boat, or equipment trailers who want one lock that fits multiple coupler sizes and prefer the convenience of keyed alike units. It works well for fleet owners, rental operators, and homeowners who move trailers between hitches and want consistent key access.\u003c\/p\u003e\n\u003cp\u003eThose who need a low-profile or permanently mounted coupler lock, or who require high-security solutions rated against cutting with heavy tools, may want to consider specialized hitch immobilizers or additional chains and devices. This lock is focused on deterring opportunistic theft and providing practical everyday security.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eBroad compatibility across common coupler sizes reduces the need for multiple lock types.\u003c\/li\u003e\n \u003cli\u003eAdvanced locking mechanism and resistance to picking and prying increase theft deterrence.\u003c\/li\u003e\n \u003cli\u003eKeyed alike option and two included keys simplify use across multiple trailers.\u003c\/li\u003e\n \u003cli\u003eCorrosion resistance and a limited lifetime warranty add long-term value.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSome customers report mixed impressions of build durability, so extreme abuse or severe cutting attacks are not guaranteed to be stopped.\u003c\/li\u003e\n \u003cli\u003eThe weight and size may be bulkier than slim-profile alternatives if space is limited.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e379KA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eFits 1-7\/8 in, 2 in, and 2-5\/16 in couplers\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.4 lbs per lock\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKeying\u003c\/td\u003e\n\u003ctd\u003eKeyed alike, includes two keys\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eResists rust and corrosion\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eRekeyable\u003c\/td\u003e\n\u003ctd\u003eYes, by authorized Master Lock locksmith\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Master Lock 379KA universal coupler lock is a practical, good-value choice for everyday trailer security, especially for users who need one lock to fit multiple hitch sizes and prefer keyed alike convenience. It balances ease of use, corrosion resistance, and an advanced locking mechanism, making it a sensible deterrent against theft for most owners, while those needing extreme cut resistance should supplement it with additional security measures.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this lock fit my trailer coupler?\u003c\/strong\u003e\u003cbr\u003eIt fits 1-7\/8 in, 2 in, and 2-5\/16 in couplers from common manufacturers, covering the most widely used trailer tongues.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the locks rekeyable?\u003c\/strong\u003e\u003cbr\u003eYes, the locking mechanism is rekeyable through an authorized Master Lock locksmith if you need to change keys later.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many keys are included?\u003c\/strong\u003e\u003cbr\u003eThe listing includes two keys and the keyed alike option makes it easy to use the same key for multiple locks.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48642406908123,"sku":"B001QN3GUG","price":40.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51DNFQNf-gL._AC.jpg?v=1778595430","url":"https:\/\/gearmusthave.com\/products\/master-lock-universal-trailer-coupler-lock-379ka-keyed-alike","provider":"GearMustHave","version":"1.0","type":"link"}