{"product_id":"13-4hd-rectangular-suspension-equalizer","title":"13-4HD – Rectangular Suspension Equalizer","description":"\u003cp\u003eThe 13-4HD Rectangular Suspension Equalizer is engineered for high-capacity tandem-axle trailers, providing robust load balancing and smooth articulation between leaf spring packs. Its heavy-duty rectangular profile and precision-machined pivot points ensure reliable performance under the most demanding hauling conditions.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eHeavy-duty rectangular design for enhanced strength\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePrecision-bored eyes for smooth pivot action\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eDurable powder-coat finish resists corrosion and wear\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eFits standard 1¾″ wide leaf springs with matching bushings\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eSpecifications:\u003c\/p\u003e   \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eAttribute\u003c\/th\u003e \u003cth\u003eMeasurement\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eOverall Length (A)\u003c\/td\u003e \u003ctd\u003e11″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHeight (B)\u003c\/td\u003e \u003ctd\u003e4⅝″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eEye-to-Eye Width (C)\u003c\/td\u003e \u003ctd\u003e5⁻¹³⁄₁₆″ (5.8125″)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMounting Hole I.D. (D)\u003c\/td\u003e \u003ctd\u003e9⁄16″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCenter Pivot Hole I.D. (E)\u003c\/td\u003e \u003ctd\u003e7⁄8″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAuxiliary Hole I.D. (F)\u003c\/td\u003e \u003ctd\u003e7⁄16″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eInner Body Diameter\u003c\/td\u003e \u003ctd\u003e2¼″ (2.25″)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial \u0026amp; Finish\u003c\/td\u003e \u003ctd\u003eHigh-strength steel, black powder coat\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e   \u003cp\u003eFitment \u0026amp; Applications:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eDesigned for tandem-axle trailers rated 9K–15K lb\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eRequires 9⁄16″, 7⁄8″, and 7⁄16″ pivot hardware (sold separately)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"Trailer Parts Mart","offers":[{"title":"Default Title","offer_id":52963232743640,"sku":"13-4HD","price":51.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/0898\/9144\/files\/01_13-4HD__26145_584977ab8ace.webp?v=1794460104","url":"https:\/\/trailerproparts.com\/products\/13-4hd-rectangular-suspension-equalizer","provider":"Trailer Parts Mart","version":"1.0","type":"link"}