InfinitiPartsDeal.com offers the wholesale prices for genuine 2015 Infiniti Q40 parts. Parts like Piston,Crankshaft & Flywheel are shipped directly from authorized Infiniti dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 2.5L, 6 Cyl 3.5L, 6 Cyl 3.7L. Trim: Journey, Leather, Premium, Sport, Sport Premium.