InfinitiPartsDeal.com offers the wholesale prices for genuine 2013 Infiniti FX50 parts. Parts like Power Steering Pump Mounting are shipped directly from authorized Infiniti dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.5L, 6 Cyl 3.7L, 8 Cyl 5.0L. Grade/Trim: Base, Premium, Sport.