Cold Air Intake Kit for Kia Optima/Hyundai Sonata (2011-2014) with 2.4L L4 Engine Black

Optimize Airflow and Throttle Response for Kia Optima & Hyundai Sonata Theta II

Who It’s For: Designed specifically for 2011-2014 Kia Optima and Hyundai Sonata owners running the 2.4L Theta II engine family. If you’re looking to sharpen your daily commute and give your sedan a more aggressive presence when you step on the gas, this is your first step.

The Problem: The factory air intake on the Theta II is a masterclass in restriction. Between the silencer boxes, the accordion-style plastic tubing, and the thick paper filter, the air is turbulent and warm by the time it hits the throttle body. This setup is designed for silence, not efficiency, often leading to a sluggish throttle feel and “heat soak” during stop-and-go traffic.

The Solution: We engineered this cold air intake to replace the factory plastic maze with a mandrel-bent aluminum pipe and a high-flow performance filter. By streamlining the air path and isolating the intake from engine bay heat, we correct the factory flow limitations of the Theta II, delivering a more consistent air charge and a much-needed boost in mid-range torque.

Why This is the Ultimate Upgrade

• Enhanced Induction Efficiency: The smooth-bore aluminum piping eliminates the turbulence found in stock ribbed hoses, resulting in faster spool-up and crisper throttle response.
• Durable Thermal Coating: Finished in a heat-resistant black powder coat, this kit doesn’t just look professional—it helps resist the high under-hood temperatures common in GDI (Gasoline Direct Injection) engines.
• True Bolt-On Fitment: No cutting or permanent modification required. This kit utilizes factory mounting points, making it an easy Saturday morning project for any enthusiast.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2011-2014 Kia Optima LX (2.4L Engine)
• 2011-2014 Kia Optima EX (2.4L Engine)
• 2011-2014 Kia Optima SX (2.4L Engine)
• 2011-2014 Hyundai Sonata GLS (2.4L Engine)
• 2011-2014 Hyundai Sonata SE (2.4L Engine)
• 2011-2014 Hyundai Sonata Limited (2.4L Engine)

Interchange Part Numbers:

AI-KOPT1114-24L-BK, 2.4L-THETA2-INTAKE-BLACK

The Performance Promise

Buy with confidence. Every kit is inspected for weld integrity and finish quality. As a pro-tip from the shop floor: Always disconnect your battery for at least 30 minutes after installation. This forces the ECU to reset its long-term fuel trims and learn the new, increased airflow parameters of your upgraded intake system.