Performance Air Intake for Infiniti QX80 (2014-2020) 5.6L Engine

Optimizing Oxygen Velocity: High-Flow Intake for the VK56VD 5.6L V8

Who It’s For: Engineered for Infiniti QX80 owners running the high-displacement VK56VD 5.6L V8 powerplant who are tired of the stock sluggishness and muffled engine note.

The Symptom: The factory intake on the QX80 is designed for silence above all else. It utilizes a restrictive, multi-chambered plastic resonator box and corrugated rubber tubing that creates massive air turbulence. In a vehicle this heavy, that turbulence translates to a delay in throttle response and a struggle to find peak torque when merging or towing. You’re effectively asking a massive 5.6L engine to breathe through a series of baffled straws.

The Engineering Fix: This system replaces that restrictive plumbing with a mandrel-bent T304 aluminum tube, providing a smooth, high-velocity path for the air column. We’ve included a specialized heat shield featuring a reflective insulation mat. This isn’t just for looks; it creates a thermal barrier that prevents "heat soak" from the engine bay. By keeping the intake charge cooler and more dense, we increase the oxygen concentration in the combustion chamber, resulting in a sharper throttle snap and a powerful, throaty induction roar under load.

Why Mechanics Choose This Kit

• Optimized Torque Curve: By reducing intake restriction, this kit allows the VK56VD to reach its 413 lb-ft torque peak more efficiently, providing up to a 10% boost in usable power for passing and towing.
• Acoustic Resonance: Replaces the factory "silencer" boxes with a straight-through design that provides a deep, sporty V8 growl only when you step on it, maintaining luxury refinement at cruising speeds.
• Thermal Management: The T304 aluminum piping and insulated heat shield work together to minimize the temperature of the air entering the stock manifold, maximizing air density for better combustion.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2014 Infiniti QX80 5.6L V8
• 2015 Infiniti QX80 5.6L V8
• 2016 Infiniti QX80 5.6L V8
• 2017 Infiniti QX80 5.6L V8
• 2018 Infiniti QX80 5.6L V8
• 2019 Infiniti QX80 5.6L V8
• 2020 Infiniti QX80 5.6L V8

Interchange Reference:

QX80-56-2014, QX80-56-2015, QX80-56-2016, QX80-56-2017, QX80-56-2018, QX80-56-2019, QX80-56-2020

The Performance Promise

Buy with confidence. This kit is designed for a direct bolt-on installation using basic hand tools in under 60 minutes. We recommend a brief battery terminal disconnect after installation to allow the ECU to calibrate for the increased mass airflow. Backed by real automotive experts and fast shipping.