In 2003, Infiniti launched the FX35 as a replacement to the QX4. Unlike the QX4, which was simply a heavily optioned luxury version of the Pathfinder, the FX35 was not wholly based on any other Nissan vehicle. It shared the same platform and engine as the 350Z, but was otherwise completely new and unique. Rear wheel drive was standard on the FX35, as was the 280hp 3.5L V6 engine (second generation models would get 303hp). All wheel drive was optional, but Infiniti never really intended this vehicle to dominate the trails. This was a very comfortable and sporty SUV equipped with all the modern amenities and conveniences you'd expect from a vehicle in this class. And, since it was a luxury SUV, Infiniti FX35 parts are the highest quality and can often times be expensive to replace. For great deals on repair parts for your Infiniti, shop here. Fun fact: the Infiniti FX was the first vehicle in the US to include a "lane departure warning" system, which monitors lane markings on the pavement and alerts drivers to unintentional wandering.