Specification Brand : M-Parts BulletPoint1 : SW4B Trailer Spring - 25-1/4" Double Eye 4-Leaf Spring 1-3/4" Wide for 3,500 lbs (3.5K) Trailers (1750 lb Capacity Per Spring) BulletPoint2 : Length from center of spring eye to center of spring eye: 25-1/4" BulletPoint3 : Spring width: 1-3/4", Eye diameter with bushing: 9/16" BulletPoint4 : Leaf Thickness 5/16", Number of leaves: 4 BulletPoint5 : Equivalent to UNA212, UNA-212, SW4B, PR4B, LIB-401-DE, 93184, 9150014, 72-42, 72-042, 4 LEAF, 3500, 25-1/8, 124903 Color : Black ExternallyAssignedProductIdentifier1 : 0842995133321 ExternallyAssignedProductIdentifier2 : 842995133321 FitType : Universal ItemName : M-Parts 2 Pairs of SW4B Trailer Spring - 25-1/4" Double Eye 4-Leaf Spring 1-3/4" Wide for 3,500 lbs (3.5K) Trailers (1750 lb Capacity Per Spring) ItemPackageDimensions_Height : 71.12 centimeters ItemPackageDimensions_Length : 7.62 centimeters ItemPackageDimensions_Width : 27.94 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : trailer-springs Manufacturer : M-Parts ManufactureYear : 2008 Material : Metal ModelNumber : 74871-TA0-G00 NumberOfItems : 1 OemEquivalentPartNumber1 : 072-42 OemEquivalentPartNumber2 : SW4B PartNumber : SW4B ProductDescription : Double-eye leaf springs are the part of a trailer's suspension system whose job it is to provide an attachment point for a 3,500-lb axle. Impressive strength at this leaf count. It has a nice curve to it that is perfect when it flexes to resist shock and ensures a smooth ride. Includes ultra sleek black bushings with 9/16" inner diameter. Specs: Spring capacity: 1,750 lbs Axle capacity: 3,500 lbs Length from center of spring eye to center of spring eye: 25-1/4" Spring width: 1-3/4" Eye diameter with bushing: 9/16" Eye diameter without bushing: 11/16" Leaf Thickness 5/16" Number of leaves: 4 Notes: To ensure proper axle alignment and suspension performance, leaf springs should always be replaced in pairs. Spring attaches to hanger mounted on trailer frame at one end. Other end connects to shackle straps suspended from hanger or equalizer Hangers or hanger kit are sold separately and are required for installation UNA212, UNA-212, SW4B, PR4B, LIB-401-DE, 93184, 9150014, 72-42, 72-042, 4 LEAF, 3500, 25-1/8, 124903 ProductSiteLaunchDate : 2015-12-08T15:47:54.398Z Size : Small SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable UnspscCode : 26111500