{"product_id":"trailer-supplies-12-1-4-x-5-self-adjusting-electric-trailer-brake","title":"12,000 lb Axles 12.25\" x 5\", Self-Adjusting Electric Brake","description":"\u003cp\u003eUpgrade your trailer’s braking power with this TrailerSupplies 12-1\/4\" x 5\" Self-Adjusting Electric Brake Assembly Set, specially engineered for 12,000 lb trailer axles. This premium brake kit includes one left-hand (driver side) and one right-hand (passenger side) brake assembly — both fully preassembled with brake shoes, springs, and high-performance magnets mounted on heavy-duty backing plates. These self-adjusting electric drum brakes automatically maintain proper tension, reducing wear and simplifying maintenance over time. The assemblies are compatible with Dexter part number K23-442-00 and work with a wide range of heavy-duty trailer axles, including Dexter, AL-KO, Lippert, Rockwell, and others. Crafted with top-grade materials to ensure long-lasting durability and optimal performance, this set is designed for 12-1\/4\" drum diameters and 5\" widths, with a 7-hole brake flange for secure mounting. Perfect for heavy-duty applications such as equipment transport, flatbeds, and dual tandem trailers.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"44\" data-end=\"77\"\u003eWhat's Included by Kit Option\u003c\/h3\u003e\n\u003cp data-start=\"79\" data-end=\"112\"\u003e\u003cstrong data-start=\"79\" data-end=\"110\"\u003e1 Pair (2 Brakes – LH + RH)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"113\" data-end=\"408\"\u003e\n\u003cli data-start=\"113\" data-end=\"181\"\u003e\n\u003cp data-start=\"115\" data-end=\"181\"\u003e1 × Left-Hand (Driver Side) 12-1\/4\" x 5\" Electric Brake Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"182\" data-end=\"254\"\u003e\n\u003cp data-start=\"184\" data-end=\"254\"\u003e1 × Right-Hand (Passenger Side) 12-1\/4\" x 5\" Electric Brake Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"255\" data-end=\"297\"\u003e\n\u003cp data-start=\"257\" data-end=\"297\"\u003eSelf-adjusting mechanism pre-installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"298\" data-end=\"375\"\u003e\n\u003cp data-start=\"300\" data-end=\"375\"\u003eFully mounted with shoes, magnets, springs, and heavy-duty backing plates\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"410\" data-end=\"413\"\u003e\n\u003cp data-start=\"415\" data-end=\"453\"\u003e\u003cstrong data-start=\"415\" data-end=\"451\"\u003e2 Pairs (4 Brakes – 2 LH + 2 RH)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"454\" data-end=\"701\"\u003e\n\u003cli data-start=\"454\" data-end=\"510\"\u003e\n\u003cp data-start=\"456\" data-end=\"510\"\u003e2 × Left-Hand 12-1\/4\" x 5\" Electric Brake Assemblies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"511\" data-end=\"568\"\u003e\n\u003cp data-start=\"513\" data-end=\"568\"\u003e2 × Right-Hand 12-1\/4\" x 5\" Electric Brake Assemblies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"569\" data-end=\"607\"\u003e\n\u003cp data-start=\"571\" data-end=\"607\"\u003eSelf-adjusting internal mechanisms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"608\" data-end=\"668\"\u003e\n\u003cp data-start=\"610\" data-end=\"668\"\u003eSuitable for tandem axle trailers rated 12,000–15,000 lb\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"703\" data-end=\"706\"\u003e\n\u003cp data-start=\"708\" data-end=\"736\"\u003e\u003cstrong data-start=\"708\" data-end=\"734\"\u003e2 Pairs + Grease Seals\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"737\" data-end=\"1135\"\u003e\n\u003cli data-start=\"737\" data-end=\"793\"\u003e\n\u003cp data-start=\"739\" data-end=\"793\"\u003e2 × Left-Hand 12-1\/4\" x 5\" Electric Brake Assemblies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"794\" data-end=\"851\"\u003e\n\u003cp data-start=\"796\" data-end=\"851\"\u003e2 × Right-Hand 12-1\/4\" x 5\" Electric Brake Assemblies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"852\" data-end=\"1041\"\u003e\n\u003cp data-start=\"854\" data-end=\"916\"\u003e4 × Unitized Oil Seals (3.125\" ID × 4.50\" OD × 0.595\" Width)\u003c\/p\u003e\n\u003cul data-start=\"919\" data-end=\"1041\"\u003e\n\u003cli data-start=\"919\" data-end=\"980\"\u003e\n\u003cp data-start=\"921\" data-end=\"980\"\u003eDual-lip design prevents grease leakage and contamination\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"983\" data-end=\"1041\"\u003e\n\u003cp data-start=\"985\" data-end=\"1041\"\u003eReplaces Dexter 010-056-00, Hayes 091023, AL-KO 568217\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1042\" data-end=\"1102\"\u003e\n\u003cp data-start=\"1044\" data-end=\"1102\"\u003eDesigned for full axle rebuild or heavy-duty maintenance\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"TRAILER SUPPLIES","offers":[{"title":"1 PAIR","offer_id":46881118290149,"sku":"WA-77-1212-1PAIR","price":272.99,"currency_code":"USD","in_stock":true},{"title":"2 PAIR","offer_id":46881118322917,"sku":"WA-77-1212-2PAIR","price":539.99,"currency_code":"USD","in_stock":true},{"title":"2 PAIR +4SEAL","offer_id":46881118355685,"sku":"WA-77-1212-2PAIR4SEAL","price":611.98,"currency_code":"USD","in_stock":true},{"title":"1 Left","offer_id":47770801668325,"sku":null,"price":141.99,"currency_code":"USD","in_stock":true},{"title":"1 Right","offer_id":47770801701093,"sku":null,"price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0227\/7349\/files\/61U_E0pmVLL.jpg?v=1751296355","url":"https:\/\/www.wtrailer.com\/products\/trailer-supplies-12-1-4-x-5-self-adjusting-electric-trailer-brake","provider":"Trailer Supplies","version":"1.0","type":"link"}