The Infiniti FX45 Air Duct directs a cool, sealed stream directly to the 4.5-liter V8. This provides the crossover with quick throttle and reliable pulling power. This component prevents dust and leaves by keeping the intake path covered. It keeps delicate internals clean and ensures the 320-horse Infiniti engine has its snap in hundreds of thousands of miles. Precise mass air flow measurements remain in place because the Air Duct has no gaps allowing stray air to escape. This prevents lean mixtures, which waste fuel. All 2003-2008 FX45 models use the same molded channel, which means that FX45 drivers can change it to either early chrome-wheel or later lane-warning trims without tools or trial-and-error. Massive interior volume in the Infiniti duct allows over 10,000 gallons of atmosphere to flow through each tank of gas. The rugged thermoplastic withstands heat, vibration, and splash from the road. The Infiniti heritage behind the Air Duct also implies accurate clip points that will not rattle on cracked pavement, maintaining the quiet luxury of the cabin. Within the Infiniti engine bay, the Air Duct connects directly to the filter in a smooth funnel form, which maintains laminar airflow to enhance stronger combustion. Since the Air Duct has OEM-grade seals, high-speed vibration is kept at a minimum, which is another safety measure since there is less probability of stalling sensor errors. When it comes to pulling small trailers, winding canyon drives, or daily commuting, the FX45 powertrain relies on a constant flow of oxygen, and this Air Duct is up to the task for every FX45 owner. There are hardly any under-hood items that can be compared to the Infiniti FX45 combination of simplicity, durability, and performance enhancement, which is why the Air Duct is a small component with a big reputation.
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