{"product_id":"bilstein-35-115939-suspension-strut-assembly-front-left","title":"Bilstein 35-115939 Suspension Strut Assembly - Front Left","description":"\u003ch2\u003eBilstein B8 Performance Plus Front Left Strut\u003c\/h2\u003e\u003cp\u003eThe Bilstein B8 Performance Plus front left suspension strut is built for BMW 128i, 135i, and 135is models that use lowering springs. Part number 35-115939 pairs application-specific valving with a monotube design to sharpen handling response and support a sportier stance.\u003c\/p\u003e\u003cp\u003eFinished in Bilstein yellow paint with a blue bellows boot, this B8 Performance Plus damper is engineered as an OE upgrade for lowered setups. It is a direct choice for drivers searching for a front left strut for 2008-2013 BMW 128i or 135i applications, including the 2013 BMW 135is.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBilstein B8 Performance Plus series for lowered suspension setups\u003c\/li\u003e\n\u003cli\u003eMonotube internal design for consistent damping response\u003c\/li\u003e\n\u003cli\u003eApplication-specific valve settings tuned for performance use\u003c\/li\u003e\n\u003cli\u003eFront left suspension strut assembly\u003c\/li\u003e\n\u003cli\u003eBlue bellows boot included\u003c\/li\u003e\n\u003cli\u003eYellow paint finish\u003c\/li\u003e\n\u003cli\u003eUpper mount type: stem\u003c\/li\u003e\n\u003cli\u003eLower mount type: base cup\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eBilstein B8 Performance Plus dampers are designed as a performance-focused replacement for OE dampers when paired with aftermarket lowering springs. The monotube construction helps maintain controlled damping, while the valving is matched to the application to improve handling balance and road feel. For BMW 128i and BMW 135i owners, part number 35-115939 provides a front left solution that supports a lowered ride height without sacrificing the precision expected from Bilstein shock absorbers.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive body roll after lowering the suspension\u003c\/li\u003e\n\u003cli\u003eReduced damping control with aftermarket lowering springs\u003c\/li\u003e\n\u003cli\u003eFront-end instability during cornering\u003c\/li\u003e\n\u003cli\u003eUneven ride quality from worn OE struts\u003c\/li\u003e\n\u003cli\u003eLoss of steering response on lowered BMW 128i and 135i models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2008-2013 BMW 128i, front left.\u003c\/li\u003e\n\u003cli\u003eFits 2008-2013 BMW 135i, front left.\u003c\/li\u003e\n\u003cli\u003eFits 2013 BMW 135is, front left.\u003c\/li\u003e\n\u003cli\u003eUse with aftermarket lowering springs as specified by the B8 Performance Plus line.\u003c\/li\u003e\n\u003cli\u003eConfirm suspension configuration and side before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBilstein tests each damper to meet or exceed OE standards. The B8 Performance Plus line is built around the brand’s performance suspension engineering and is backed by Bilstein quality standards for consistent fitment and function.\u003c\/p\u003e","brand":"Bilstein","offers":[{"title":"Default Title","offer_id":52401908908213,"sku":"BBGL-35-115939","price":249.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/B5_35115939_Fro.jpg?v=1777762915","url":"https:\/\/www.partcatalog.com\/products\/bilstein-35-115939-suspension-strut-assembly-front-left","provider":"PartCatalog","version":"1.0","type":"link"}