LexusPartsNow.com offers the wholesale prices for genuine 2021 Lexus IS350 parts. Parts like Mounting are shipped directly from authorized Lexus dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.0L, 6 Cyl 3.5L, 8 Cyl 5.0L. Trim: LUX.