{"product_id":"3-5k-trailer-axle-u-bolt-kit-2-3-8-round","title":"3,500 lb Trailer Axle U-Bolt Kit - Fits 2-3\/8\" Round Axles - 5.5\" x 1\/2\" U-Bolts with Tie Plates \u0026 Hardware","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUpgrade or replace your trailer's suspension hardware with this 3,500 lbs trailer axle U-bolt kit, designed to provide a secure, long-lasting connection between your axle and leaf springs. Compatible with standard 2-3\/8\" round trailer axles and 1-3\/4\" wide double eye or slipper leaf springs, this kit is ideal for utility trailers, boat trailers, cargo trailers, and more. \u003c\/p\u003e\n\u003cp\u003eEach kit includes all necessary hardware for a complete axle mounting solution, 4 heavy duty 5.5\" U-bolts with 1\/2\"-20 threads, eight hex nuts with lock washers, and two tie plates. All components are zinc-coated to resist rust and corrosion, ensuring reliable performance in all weather and road conditions. \u003c\/p\u003e\n\u003cp\u003eDesigned for OEM-style fitments, this U-bolt kit ensures proper axle alignment and stable towing. Whether you're repairing an older suspension or assembling a new trailer, it delivers the strength and durability needed for safe, dependable towing. \u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eWhat's include by Kit Option:\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e(4) U-bolts - 5.5\" length x 1\/2\"-20 thread - fits 2-3\/8\" round axles\u003cbr\u003e(2) Tie plates - fits 1-3\/4\" wide springs\u003cbr\u003e(8) Hex nuts with lock washers\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications: \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAxle diameter: 2-3\/8\"\u003cbr\u003eAxle capacity: Typical 3,500 lb axle\u003cbr\u003eSpring width: 1-3\/4\"\u003c\/p\u003e\n\u003cp\u003eU-Bolt Length: 5.5\"\u003c\/p\u003e\n\u003cp\u003eU-Bolt Diameter: 1\/2\"\u003c\/p\u003e\n\u003cp\u003eThread Size: 1\/2\"-20\u003c\/p\u003e","brand":"RunningGearParts.com","offers":[{"title":"Default Title","offer_id":41948045213799,"sku":"TS-PUBR1-FBM","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8617\/5079\/files\/RGPProductDisplayMATAPUBR-1_GRADE5_A.png?v=1770332328","url":"https:\/\/www.runninggearparts.com\/products\/3-5k-trailer-axle-u-bolt-kit-2-3-8-round","provider":"RunningGearParts.com","version":"1.0","type":"link"}