Specification AutomotiveFitType : universal_fit Brand : TRAILER SUPPLIES BulletPoint : 30,000 Pound Rating BulletPoint1 : 【HEAVY-DUTY LOAD CAPACITY】Each spring is rated for 1,750 lbs, offering a combined 3,500 lb capacity per pair—ideal for trailers with standard 3,500 lb axles. Provides dependable support for cargo, utility, landscape, and recreational trailers. BulletPoint2 : 【PREMIUM MANGANESE STEEL CONSTRUCTION】Made from 60Si2Mn high-tensile manganese steel, these leaf springs deliver exceptional strength, flexibility, and long-term resistance to fatigue, rust, and deformation—even under heavy use. BulletPoint3 : 【STANDARDIZED DIMENSIONS FOR EASY FITMENT】Each spring measures 25-1/4" eye to eye, with a 1-3/4" leaf width, 3" free arch height, and 9/16" bushing ID. Pre-installed nylon bushings ensure quick, hassle-free installation with common hanger kits. BulletPoint4 : 【WIDE PART NUMBER COMPATIBILITY】Compatible with multiple OEM part numbers including SW4B, 72-42, LIB-401-DE, UNA212, PR4B, 124903, 9150014, and 93184—making it a versatile replacement across many trailer brands. BulletPoint5 : 【ENGINEERED FOR TRAILER PERFORMANCE】Designed to maintain proper axle alignment, reduce vibration, and deliver smoother towing performance. A reliable suspension upgrade for DIYers and trailer repair professionals alike. Color : Black CompatibleWithVehicleType : Trailer ConnectorType : Plug ExternallyAssignedProductIdentifier1 : 840223640061 ExternallyAssignedProductIdentifier2 : 0840223640061 ExternallyAssignedProductIdentifier3 : 00783192025821 FinishType : Powder Coated FitType : Vehicle Specific IncludedComponents : Trailer Springs ItemDisplayWeight : 1.55 pounds ItemName : TRAILER SUPPLIES 4-Leaf Double Eye Trailer Spring Set, 25-1/4" x 1-3/4", 1,750 lbs Capacity per Spring – Fits 3,500 lb Axles 1 Pair ItemPackageDimensions_Height : 5 inches ItemPackageDimensions_Length : 25 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : trailer-springs Manufacturer : TRAILER SUPPLIES Material : Alloy Steel ModelName : WA-212-1PAIR ModelNumber : 1750lbx2 NumberOfBoxes : 1 NumberOfItems : 2 NumberOfPieces : 1 OemEquivalentPartNumber : BGSS580404 PackageLevel : unit PartNumber : 4LF35DESP-2 PartTypeId : 14537 ProductDescription : Upgrade your trailer’s suspension with this high-quality pair of 4-leaf double eye trailer springs from Trailer Supplies. Designed to fit 3,500 lb trailer axles, each spring measures 25-1/4 inches long and 1-3/4 inches wide, making them a reliable replacement for worn or damaged factory-installed springs. Built from durable, heat-treated steel and finished with a corrosion-resistant coating, these double eye springs are made to withstand the stresses of towing—whether you're hauling equipment, cargo, livestock, or recreational trailers. The double-eye design ensures a smooth ride and secure attachment when paired with standard hanger kits. Whether you're upgrading an old suspension setup or building a new trailer, Trailer Supplies provides dependable parts trusted by trailer owners and repair shops across the country. This listing includes 2 springs (1 pair) and is compatible with most utility, boat, and landscape trailers using standard 3,500 lb axles. ProductSiteLaunchDate : 2025-06-03T19:27:43.468Z Size : Pair (2) Style : Detachable SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 25170000 WarrantyDescription : 2-YEAR LIMITED WARRANTY