{"product_id":"dor-929-947","title":"Dorman Severe HD Coil Spring Upgrade (+70% Load Handling) - 929-947","description":"\u003cstyle\u003e     body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; }     h2, h3 { color: #2c3e50; }     ul { list-style: none; padding: 0; }     table { width: 100%; border-collapse: collapse; margin: 20px 0; }     table, th, td { border: 1px solid #ddd; }     th, td { padding: 10px; text-align: left; }     th { background-color: #f4f4f4; }     .vehicle-list { background-color: #f9f9f9; padding: 15px; border-radius: 5px; }     .vehicle-list span { display: inline-block; background-color: #ecf0f1; margin: 5px; padding: 8px 12px;          border-radius: 4px; font-size: 14px; } \u003c\/style\u003e  Severe Heavy Duty Coil Spring Upgrade - 70 Percent Increased Load Handling  \u003cp\u003eThis pair of extra-heavy-duty coil springs is designed to provide a 70% increase in load handling capability over the vehicle's nominal spring rate, and offer an easy upgrade for vehicles used in continuous heavy hauling conditions. Custom-engineered to improve ride quality, reduce driver fatigue, and improve handling, they're an ideal replacement for coil springs on many pickup trucks, SUVs, RVs, plow trucks, vans and more. Prefer upgrading to coil springs that aren't as stiff? Check out the lighter version of this spring set that provides a 35% increase in load handling capability over your truck's nominal spring rate.\u003c\/p\u003e     \u003ch2\u003eKey Features:\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e✔ Upgraded spring rate - this pair of extra-heavy-duty coil springs is designed to provide a 70% increase in load handling capability over the nominal spring rate of specified vehicles\u003c\/li\u003e \u003cli\u003e✔ Ideal solution - precision-engineered to improve ride quality, reduce driver fatigue and improve handling on many pickup trucks, SUVs, RVs, plow trucks, vans and more\u003c\/li\u003e \u003cli\u003e✔ Durable construction - manufactured from quality steel to help ensure reliable performance and to replace or upgrade worn or damaged coil springs\u003c\/li\u003e \u003cli\u003e✔ Lighter-duty version available - for less stiffness, upgrade to our version of this spring set that provides a 35% increase in load handling capability over the vehicle's nominal spring rate\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003e Fitments: \u003c\/h2\u003e Chevrolet  Express 3500 2006-2021, GMC  Savana 3500 2006-2021 \u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003ctable\u003e     \u003ctr\u003e         \u003cth\u003eFeature\u003c\/th\u003e         \u003cth\u003eDetails\u003c\/th\u003e     \u003c\/tr\u003e  \u003ctr\u003e     \u003ctd\u003ePart\u003c\/td\u003e     \u003ctd\u003e929-947\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003ePackaging Type:\t\u003c\/td\u003e     \u003ctd\u003eBox\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eSuspension Grade Type:\u003c\/td\u003e     \u003ctd\u003eXHD \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eWire Diameter:\u003c\/td\u003e     \u003ctd\u003e1.062 in \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eSpring Type:\u003c\/td\u003e     \u003ctd\u003eCoil Spring \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eSpring Rate Type:\u003c\/td\u003e     \u003ctd\u003eConstant\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eMaterial:\t\u003c\/td\u003e     \u003ctd\u003e5160H Alloy \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eHeight:\t\u003c\/td\u003e     \u003ctd\u003e16 in \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eEnd 1 Type:\t\u003c\/td\u003e     \u003ctd\u003eSemi Closed Plain \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eEnd 2 Type:\u003c\/td\u003e     \u003ctd\u003eSemi Closed Plain \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003ePackage Contents:\t\u003c\/td\u003e     \u003ctd\u003e2 Coil Springs \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eFinish:\u003c\/td\u003e     \u003ctd\u003ePowder Coat \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e     \u003ctd\u003eColor:\u003c\/td\u003e     \u003ctd\u003eMetallic Grey\u003c\/td\u003e \u003c\/tr\u003e  \u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eBuy with confidence\u003c\/strong\u003e – If you encounter any issues with your Dorman  product, simply reach out to us. We are committed to ensuring your satisfaction and will assist with any return or exchange requests that meet our\u003cspan style=\"color: rgb(230, 37, 37);\"\u003e \u003ca style=\"color: rgb(230, 37, 37);\" rel=\"noopener\" href=\"https:\/\/www.wheelsynergy.com\/pages\/return-and-refund-policy\" target=\"_blank\"\u003epolicy guidelines\u003c\/a\u003e\u003c\/span\u003e.\u003c\/p\u003e      \u003ch2\u003eWhy Choose Dorman? \u003c\/h2\u003e\u003cp\u003eDorman is a trusted leader in OE-style replacement parts,  offering precision-engineered solutions for reliable performance. Each part undergoes rigorous testing to ensure durability, safety, and a seamless fit.  Designed as a cost-effective alternative to OEM parts, Dorman provides high-quality replacements backed by expert engineering. Choose Dorman for dependable,  long-lasting automotive solutions.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":62205033709727,"sku":"591|929-947","price":375.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0337\/4949\/9963\/files\/929-947-007.jpg?v=1749145435","url":"https:\/\/www.wheelsynergy.com\/products\/dor-929-947","provider":"Wheel Synergy","version":"1.0","type":"link"}