STILLEN 2003-2007 Infiniti G35 / 2003-2008 FX35 Z-Tube [Without Intake] - 403235

Maximize your engine’s potential with the STILLEN Z-Tube, a high-efficiency intake duct designed as a direct replacement for the restrictive factory tubing on the Infiniti G35 V35 and FX35 S50. This bolt-on Z-Tube optimizes airflow, isolates intake air from engine heat, and pairs perfectly with high-flow filters for significant performance gains.

Vehicle Fitment:

• 2003–2007 Infiniti G35 Coupe 3.5L V6
• 2003–2006 Infiniti G35 Sedan 3.5L V6
• 2003–2008 Infiniti FX35 [S50]
• CARB Exempt – E.O. #D-436-22

Key Features & Benefits:

• Direct bolt-on replacement for factory intake tube
• Improves airflow and filtration efficiency
• Works with stock airbox or paired with STILLEN Hi-Flow Intake (part #402835) for maximum gains
• Increases horsepower by up to 11 WHP and may improve MPG*
• Made from roto-molded plastic, like the Nissan 350Z intake tubing
• Isolates incoming air from engine heat for cooler, denser air
• Venturi ring design speeds and directs airflow into intake chambers for a noticeable performance bump
• CARB-exempt design ensures hassle-free emissions compliance
• Durable construction designed in the USA for long-lasting performance

Performance Notes:

The STILLEN Z-Tube transforms the airflow characteristics of your Infiniti G35 or FX35. Its design replicates the efficient airflow of the Nissan 350Z while isolating intake air from engine heat. Maximum gains are realized when combined with the STILLEN Hi-Flow Intake filter (#402835), creating a true cold air intake system that improves horsepower, torque, and engine sound.

Installation Notes:

• Simple, direct replacement installation
• Compatible with factory airbox or STILLEN Hi-Flow Intake kit for peak performance
• No permanent modifications required

Overview:

The STILLEN Z-Tube is the perfect solution for enthusiasts looking for a high-performance, direct-fit intake upgrade. Increase horsepower, throttle response, and engine efficiency while maintaining a clean, OEM-friendly installation.