{"product_id":"bilstein-21-030505-suspension-strut-cartridge-front","title":"Bilstein 21-030505 Suspension Strut Cartridge - Front","description":"\u003ch2\u003eBilstein B4 OE Replacement Front Strut Cartridge\u003c\/h2\u003e\u003cp\u003eThe Bilstein B4 OE Replacement suspension strut cartridge is engineered to restore original ride quality and handling on select BMW 3 Series models. Built to meet or exceed OE standards, this front cartridge is a direct-fit replacement for drivers who want factory-style performance with Bilstein quality.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBilstein B4 OE Replacement series for OE-style ride restoration\u003c\/li\u003e\n\u003cli\u003eFront suspension strut cartridge for select BMW applications\u003c\/li\u003e\n\u003cli\u003eTwintube internal design for controlled damping response\u003c\/li\u003e\n\u003cli\u003eBlack paint finish for corrosion-resistant appearance\u003c\/li\u003e\n\u003cli\u003eUpper mount type: stem; lower mount type: housing\u003c\/li\u003e\n\u003cli\u003eBoot not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Line Details\u003c\/h2\u003e\u003cp\u003eBilstein B4 OE Replacement dampers are built for drivers who want to return the vehicle’s suspension behavior to original specifications. This line focuses on maintaining factory ride comfort and handling balance while using Bilstein’s established damper engineering for consistent performance on the road.\u003c\/p\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 1987-1993 BMW 325i, front.\u003c\/li\u003e\n\u003cli\u003eFits 1991-1992 BMW 318i, front.\u003c\/li\u003e\n\u003cli\u003eFits 1991 BMW 318is, front.\u003c\/li\u003e\n\u003cli\u003eFits 1987-1991 BMW 325is, front.\u003c\/li\u003e\n\u003cli\u003eFits 1984-1987 BMW 325e, front.\u003c\/li\u003e\n\u003cli\u003eFits 1986-1987 BMW 325es, front.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat This Part Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive front-end bounce or oscillation\u003c\/li\u003e\n\u003cli\u003eReduced steering response from worn suspension damping\u003c\/li\u003e\n\u003cli\u003eUneven ride quality compared with factory behavior\u003c\/li\u003e\n\u003cli\u003eNoisy or loose-feeling front suspension performance caused by aging struts\u003c\/li\u003e\n\u003cli\u003eLoss of control and stability during normal driving\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the vehicle’s front suspension configuration before ordering. This cartridge uses a stem upper mount and housing lower mount, so the existing strut assembly should be inspected for wear, damage, and proper serviceability during replacement. Part number 21-030505 is also referenced for this application, and this part cross-references KYB 364021 for the same application.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBilstein B4 OE Replacement parts are manufactured to meet or exceed OE standards for fit and function. Part number 21-030505 is built as an OE-style replacement for restoring original suspension performance on compatible BMW 325i, 318i, 318is, 325is, 325e, and 325es front applications.\u003c\/p\u003e","brand":"Bilstein","offers":[{"title":"Default Title","offer_id":51953730158773,"sku":"BBGL-21-030505","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/B5_21030505_Fro.jpg?v=1775061573","url":"https:\/\/www.partcatalog.com\/products\/bilstein-21-030505-suspension-strut-cartridge-front","provider":"PartCatalog","version":"1.0","type":"link"}