{"product_id":"kyb-sm5178-suspension-strut-mount-rear","title":"KYB SM5178 Suspension Strut Mount - Rear","description":"\u003ch2\u003eKYB SM5178 Rear Strut Mount for Lexus LS400\u003c\/h2\u003e\u003cp\u003eKYB SM5178 is a rear suspension strut mount for select 1990-1994 Lexus LS400 models without air suspension. It replaces worn mount components that can transmit vibration, noise, and harshness into the cabin while helping restore proper suspension feel.\u003c\/p\u003e\u003cp\u003eBuilt under KYB’s Mount Components line, this rear strut mount is made as an OE-quality replacement for the specific application. It is a direct choice for drivers searching for a rear strut mount for 1990-1994 Lexus LS400, rear suspension mount replacement, or KYB SM5178 fitment details.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOE-quality replacement strut mount for the rear suspension\u003c\/li\u003e\n\u003cli\u003eSuperior rubber helps reduce noise, vibration, and harshness\u003c\/li\u003e\n\u003cli\u003eMount bearing design supports smoother steering response and front-end alignment retention where applicable\u003c\/li\u003e\n\u003cli\u003eMatched-grade studs and nuts for proper component fitment\u003c\/li\u003e\n\u003cli\u003eDesigned for the 1990-1994 Lexus LS400, rear, without air suspension\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe KYB Mount Components line focuses on replacement suspension hardware that matches the needs of each application. SM5178 is engineered to replace aged rear strut mount components on the Lexus LS400, helping address the effects of hardened vibration insulators and worn mounting parts. For shoppers comparing rear strut mount replacement options, KYB SM5178 offers a direct-fit solution for the specified Lexus LS400 years.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts 904918 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear suspension noise from worn mount components\u003c\/li\u003e\n\u003cli\u003eExcess vibration transferred into the cabin\u003c\/li\u003e\n\u003cli\u003eHarsh ride feel caused by deteriorated rubber insulators\u003c\/li\u003e\n\u003cli\u003eLoose or inconsistent suspension mounting at the rear\u003c\/li\u003e\n\u003cli\u003eReduced steering and alignment stability when related mount wear is present\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eFits 1990-1994 Lexus LS400, rear, without air suspension. Confirm the vehicle’s suspension configuration before ordering, since this part is not listed for air-suspension models. Inspect related strut and suspension components during replacement to ensure the new mount is installed on a sound assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eKYB is known for OE-style suspension replacement components, and SM5178 is built to meet the application-specific requirements of the listed Lexus LS400 fitment. The part number is KYB SM5178.\u003c\/p\u003e","brand":"KYB","offers":[{"title":"Default Title","offer_id":52401915363509,"sku":"BFJG-SM5178","price":62.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/KY_SM5178_Fro.jpg?v=1777763800","url":"https:\/\/www.partcatalog.com\/products\/kyb-sm5178-suspension-strut-mount-rear","provider":"PartCatalog","version":"1.0","type":"link"}