{"product_id":"lesjofors-4008522-coil-spring-front","title":"Lesjofors 4008522 Coil Spring - Front","description":"\u003ch2\u003eFront Coil Spring for BMW X3 and X4\u003c\/h2\u003e\u003cp\u003eThe Lesjofors 4008522 front coil spring is a direct replacement for select BMW X3 and BMW X4 models with sports suspension. It is built to OE-quality standards and uses high-strength steel with protective finishing for long-term service in suspension applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFront coil spring for select BMW X3 and BMW X4 applications\u003c\/li\u003e\n\u003cli\u003eSeat included: No\u003c\/li\u003e\n\u003cli\u003eManufactured from high-strength steel\u003c\/li\u003e\n\u003cli\u003eHeat treated, shot peened, and pre-set for consistent performance\u003c\/li\u003e\n\u003cli\u003eZinc phosphate coated and epoxy powder coat painted for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eLesjofors part number 4008522\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Overview\u003c\/h2\u003e\u003cp\u003eLesjofors 4008522 is a replacement coil spring engineered for the front suspension on BMW X3 and BMW X4 vehicles equipped with sports suspension. It is manufactured to meet or exceed OE quality expectations and is tested during production to support proper ride height and suspension response. This front coil spring is a practical choice when replacing a worn or sagging spring on a BMW X3 front suspension or a BMW X4 front suspension.\u003c\/p\u003e\u003cp\u003eThis part cross-references BMW OE numbers 31336787137 and 31336787144 for the same application. The Lesjofors 4008522 is a fitment-specific replacement for 2011 BMW X3 front, 2012-2017 BMW X3 front with sports suspension, and 2015-2018 BMW X4 front including sports suspension.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFront-end sagging from a fatigued coil spring\u003c\/li\u003e\n\u003cli\u003eUneven ride height on the BMW X3 or BMW X4\u003c\/li\u003e\n\u003cli\u003eNoisy or unstable suspension behavior caused by a weakened spring\u003c\/li\u003e\n\u003cli\u003eLoss of proper suspension support after long-term wear\u003c\/li\u003e\n\u003cli\u003eRestoration of factory-style front suspension geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstall Lesjofors 4008522 on the front suspension only and verify sports suspension fitment before ordering. Because coil springs are under high tension, use proper spring-compression equipment and follow BMW service procedures during removal and installation. Inspect related suspension components such as strut mounts, seats, and isolators before reassembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eLesjofors has a long spring-manufacturing history dating back to 1852 and supplies replacement springs built to OE-quality standards. Each spring is produced with heat treatment, shot peening, protective coating, presetting, and testing to support consistent fit and performance in BMW X3 and BMW X4 front suspension service.\u003c\/p\u003e","brand":"Lesjofors","offers":[{"title":"Default Title","offer_id":52424715927733,"sku":"CNHW-4008522","price":110.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/LJ_4008522_Fro.jpg?v=1777824355","url":"https:\/\/www.partcatalog.com\/products\/lesjofors-4008522-coil-spring-front","provider":"PartCatalog","version":"1.0","type":"link"}