{"product_id":"big-boost-valve-spring-kit","title":"Performance Diesel Worx Big Boost Valve Spring Kit | 1998.5 - 2024 Cummins","description":"\u003ch3 data-start=\"515\" data-end=\"921\" style=\"text-align: center;\"\u003e\u003cspan\u003eFrom daily drivers and heavy-duty tow rigs to full-blown drag strip builds, these springs are engineered to handle everything from mild upgrades to wild performance.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"515\" data-end=\"921\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"515\" data-end=\"921\"\u003eUnlock the full potential of your Cummins engine with the \u003cstrong data-start=\"573\" data-end=\"629\"\u003ePerformance Diesel Worx Big Boost Valve Spring Kit\u003c\/strong\u003e, engineered for superior performance, durability, and reliability. This complete drop-in package delivers 103 lbs. of seat pressure and 176 lbs. of open pressure at 0.420″ lift—making it the ideal choice for trucks running upgraded performance cams or operating under demanding conditions. \u003c\/p\u003e\n\u003cp data-start=\"515\" data-end=\"921\"\u003eBuilt with \u003cstrong data-start=\"934\" data-end=\"990\"\u003eexclusive “Pressure Tower” conical spring technology\u003c\/strong\u003e and paired with \u003cstrong data-start=\"1007\" data-end=\"1039\"\u003eultra-light billet retainers\u003c\/strong\u003e, this kit offers the highest strength-to-weight ratio available. The result? Better valve control, reduced valve float, and long-term reliability whether you’re daily driving, towing, or pushing your truck in competition.\u003c\/p\u003e\n\u003cp data-start=\"1265\" data-end=\"1615\"\u003eDesigned to handle up to \u003cstrong data-start=\"1290\" data-end=\"1309\"\u003e75 PSI of Big Boost\u003c\/strong\u003e, these springs maintain consistent performance even under extreme conditions. Heat-treated spring shims are available to fine-tune seat pressure for varying boost levels. \u003cstrong data-start=\"573\" data-end=\"629\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1617\" data-end=\"1882\"\u003e\u003cstrong data-start=\"1617\" data-end=\"1656\"\u003eWhy Choose Performance Diesel Worx?\u003c\/strong\u003e\u003cbr data-start=\"1656\" data-end=\"1659\"\u003eBecause when it comes to protecting your investment and pushing performance safely, every detail matters. This spring kit is crafted with precision, built to handle abuse, and designed to keep your Cummins running strong.\u003c\/p\u003e\n\u003cp data-start=\"1617\" data-end=\"1882\"\u003e \u003c\/p\u003e\n\u003cp\u003eNOTE:\u003c\/p\u003e\n\u003cp\u003eFor 1998.5–2002 Cummins, some models have tighter valve spring pockets, a Pocket Cutter Tool (Sold Separately) may be required to ensure proper fitment.\u003c\/p\u003e","brand":"Performance Diesel Worx","offers":[{"title":"Default Title","offer_id":50651268448544,"sku":"9824-CUMMINS-BIGBOOST-VS-KIT","price":589.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/3043\/6640\/files\/performance-diesel-worx-big-boost-valve-spring-kit-19985-2024-cummins-1876226.jpg?v=1779546250","url":"https:\/\/www.southerndieselsupply.com\/products\/big-boost-valve-spring-kit","provider":"Southern Diesel Supply","version":"1.0","type":"link"}