{"product_id":"master-lock-trailer-hitch-lock-weather-resistant-security","title":"Master Lock Trailer Hitch Lock - Weather Resistant Security","description":"\u003cp\u003eIn this review of the Master Lock Trailer Hitch Lock No. 377KA, the bottom line is simple: this is a practical, heavy-duty hitch lock for trailer owners who need a straightforward way to secure common coupler sizes. The lock is designed to fit 1-7\/8 in, 2 in, and most 2-5\/16 in trailer couplers and uses an advanced locking mechanism intended to resist picking and prying. Installation is quick and the keyed-alike option makes it convenient for users who prefer using the same key across locks, making it a sensible choice for boat trailers, utility trailers, and anyone who values rust resistance and ease of use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-size compatibility:\u003c\/strong\u003e Fits 1-7\/8 in, 2 in, and most 2-5\/16 in couplers so one lock covers the most common trailer tongues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced locking mechanism:\u003c\/strong\u003e Designed to resist picking and prying, offering stronger theft deterrence than basic pin locks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather resistant finish:\u003c\/strong\u003e Resists rust and corrosion to hold up in outdoor and marine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Installs and removes quickly without tools for convenient daily use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyed alike option:\u003c\/strong\u003e Lets owners use the same key across multiple locks to reduce key clutter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis hitch lock is best for owners of small to medium trailers, boat trailers, and utility trailers who need a reliable physical deterrent and want a single lock that fits several common coupler sizes. It suits users who prioritize durability and simple, tool-free installation and who appreciate a keyed-alike convenience.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include owners of uncommon or oversized couplers that fall outside the stated sizes, and users who need an electronic or cable-based locking system for different mounting situations. Also check fit carefully if you have a 2-5\/16 in coupler, since some customers reported mixed fit results.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeavy-duty build provides strong deterrence and a sense of security.\u003c\/li\u003e\n\u003cli\u003eFits multiple common coupler sizes reducing the need for several locks.\u003c\/li\u003e\n\u003cli\u003eWeather resistant finish helps prevent rust and extends service life.\u003c\/li\u003e\n\u003cli\u003eSimple, tool-free installation makes it quick to use on the road.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFit can be inconsistent on some 2-5\/16 in couplers, so measure before purchase.\u003c\/li\u003e\n\u003cli\u003eNot a replacement for alarmed or tracking anti-theft solutions for high-risk areas.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eMaster Lock Trailer Hitch Lock No. 377KA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible coupler sizes\u003c\/td\u003e\n\u003ctd\u003e1-7\/8 in, 2 in, and most 2-5\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLock type\u003c\/td\u003e\n\u003ctd\u003eCoupler hitch lock with keyed mechanism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecurity features\u003c\/td\u003e\n\u003ctd\u003eAdvanced locking mechanism resists picking and prying\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWeather resistant, rust and corrosion resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeying\u003c\/td\u003e\n\u003ctd\u003eKeyed alike option available\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\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Master Lock 377KA is a solid, no-nonsense hitch lock for most common trailer couplers, offering strong build quality, weather resistance, and straightforward installation. It represents good value for trailer owners who want a durable mechanical lock and keyed-alike convenience, provided they confirm fit on larger 2-5\/16 in couplers before buying.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this lock fit a 2-5\/16 in coupler?\u003c\/strong\u003e\u003cbr\u003eIt fits most 2-5\/16 in couplers, but some customers reported fit issues so measure your coupler and check clearance before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the lock weather resistant for marine use?\u003c\/strong\u003e\u003cbr\u003eYes, the lock resists rust and corrosion and is designed for outdoor conditions, making it suitable for boat trailers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I get multiple locks that use the same key?\u003c\/strong\u003e\u003cbr\u003eYes, the product is available keyed alike so you can use one key across multiple locks.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48200908210395,"sku":"B001HATY36","price":34.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51z8DVEB1AL._AC_SL1000.jpg?v=1770234866","url":"https:\/\/gearmusthave.com\/products\/master-lock-trailer-hitch-lock-weather-resistant-security","provider":"GearMustHave","version":"1.0","type":"link"}