LexusPartsNow.com offers the wholesale prices for genuine 2007 Lexus GS430 parts. Parts like Fuel Injection System are shipped directly from authorized Lexus dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.3L, 8 Cyl 4.6L.