Cold Air Intake for Scion xA/xB (2004-2006) 1.5L L4 Engine

Maximize Efficiency and Throttle Response for the Scion xA & xB 1NZ-FE

Who It’s For: Designed specifically for 2004-2006 Scion xA and xB owners running the 1NZ-FE engine who want to wake up their daily driver or weekend project.

The Problem: The factory airbox in the 1NZ-FE is a masterclass in compromise. It uses restrictive plastic baffles and corrugated tubing designed to keep the engine quiet, which unfortunately creates turbulence and traps heat. This "heat soak" leads to sluggish throttle response and a noticeable lack of top-end pull, especially when you’re trying to merge or pass on the highway.

The Solution: This Cold Air Intake replaces that restrictive factory plumbing with high-flow T304 aluminum. By smoothing out the air path and relocating the filter, we allow the 1NZ-FE to breathe much more efficiently. It corrects the factory airflow limitations, delivering a crisper throttle feel and a deep, throaty sound that the stock plastic box completely hides.

Why This is the Ultimate Upgrade

• Optimized Airflow: Engineered to boost horsepower and torque by up to 10% by reducing intake restriction and lowering intake air temperatures.
• Premium Construction: Built with mandrel-bent T304 lightweight aluminum piping that resists corrosion and looks much cleaner in your engine bay than the stock black plastic.
• Low Maintenance: Includes a high-flow, washable synthetic filter that only requires cleaning every 50,000 miles, eliminating the need for expensive paper filter replacements.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2004 Scion xA 1.5L L4 (Automatic & Manual)
• 2005 Scion xA 1.5L L4 (Automatic & Manual)
• 2006 Scion xA 1.5L L4 (Automatic & Manual)
• 2004 Scion xB 1.5L L4 (Automatic & Manual)
• 2005 Scion xB 1.5L L4 (Automatic & Manual)
• 2006 Scion xB 1.5L L4 (Automatic & Manual)

Interchange Part Numbers:

2004, 2005, 2006, 1.5, 1.5L, L4, T304, 50000

The Performance Promise

Buy with confidence. As tuners, we know that every bit of efficiency counts on these small-displacement engines. This kit provides a straightforward install (usually under 60 minutes) and won’t void your vehicle warranty. Reset your battery after install to let the ECU recalibrate for the increased airflow and enjoy the new response.