---
product_id: 7706125
title: "STILLEN 403235 Z-Tube Without Intake - 03-07 G35 Coupe / 03-06 G35 Sedan / 03-08 FX35"
brand: "stillen"
price: "€ 388.54"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.fi/products/7706125-stillen-403235-z-tube-without-intake-03-07-g35-coupe
store_origin: FI
region: Finland
---

# Boosts horsepower with optional intake Isolates intake air from engine heat Rotomolded plastic tubing for durability STILLEN 403235 Z-Tube Without Intake - 03-07 G35 Coupe / 03-06 G35 Sedan / 03-08 FX35

**Brand:** stillen
**Price:** € 388.54
**Availability:** ❌ Out of Stock

## Summary

> ❄️ Upgrade your airflow, unleash your drive!

## Quick Answers

- **What is this?** STILLEN 403235 Z-Tube Without Intake - 03-07 G35 Coupe / 03-06 G35 Sedan / 03-08 FX35 by stillen
- **How much does it cost?** € 388.54 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/7706125-stillen-403235-z-tube-without-intake-03-07-g35-coupe)

## Best For

- stillen enthusiasts

## Why This Product

- Trusted stillen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cost-Effective Upgrade:** Experience 350Z-level intake efficiency without the premium OEM price tag—best bang for your buck under $100.
- • **Effortless Installation:** Designed for a seamless DIY upgrade—fits 03-07 G35 Coupe, 03-06 G35 Sedan, and 03-08 FX35 with just basic tools.
- • **Precision Engine Cooling:** Rotomolded plastic tubing insulates air from engine heat, delivering a colder, denser intake charge for optimized performance.
- • **Modular Performance Boost:** Use with stock airbox or pair with STILLEN Hi-Flow Intake for up to +11 HP gains and a more aggressive engine tone.
- • **Enhanced Driving Experience:** Feel the immediate throttle response and hear the signature growl that sets your G35 or FX35 apart on the road.

## Overview

The STILLEN 403235 Z-Tube is a rotomolded plastic intake tube designed to replace the restrictive factory intake on select G35 and FX35 models. It isolates incoming air from engine heat to deliver cooler, denser air for improved performance. Compatible with the stock airbox or the STILLEN Hi-Flow Intake, it offers a cost-effective, easy-to-install upgrade that can add up to 11 horsepower and a more aggressive engine sound, making it a top-rated mod for enthusiasts seeking maximum gains without breaking the bank.

## Description

The intake tract on the G35 and FX35 was not designed for maximum performance. The 350Z, which shares its engine with these vehicles, is equipped with a much more efficient intake tube that is interchangeable with the G35 and FX35. OEM parts are expensive, however. The STILLEN Z-Tube offers all the performance of the 350Z tube without the high OEM price tag. Z-TUBE Made of rotomolded plastic, this product has excellent insulation qualities. This helps to isolate incoming air from engine heat, resulting in a colder intake charge and increased power. Use this with the stock airbox or for maximum gains add the STILLEN Hi-Flow Intake, our part #402835. INTAKE Due to the different states of tune of each model, the intake (independent of the Z-Tube) adds 11 horsepower at 6,100 RPM to the G35 Sedan and 5 ponies at 5,700 RPM to the Coupe. Comprised of a high-quality polyurethane intake port, washable and reusable cotton filter element, and STILLEN's signature Aluminum Venturi Ring, the Intake draws air from outside the engine bay. The Venturi ring acts as a velocity stack, speeding up and directing the airflow into the intake chambers, making more useable and noticeable power. The Intake System also lends a more aggressive tone to the G35 and FX35 when pressed, but remains unobtrusive at idle. Every magazine has been impressed with the G35's performance characteristics; and the STILLEN Hi-Flow Intake System is the perfect way to add an edge to yours. Z-TUBE / INTAKE COMBO The Z-Tube / Intake Combo package is the affordable way to upgrade the entire intake tract, combining the Z-Tube (Part #402834) and Hi-Flow Intake (Part #402835) in one convenient part number.

Review: Best performance upgrade for G35 under $100 - Great low priced upgrade for my 03 G35 coupe. Installed by myself with a screw driver & 10mm socket. Feels more responsive and sounds better. Also, got a Stillen license plate frame! Nice surprise very pleased.
Review: Best bang for your buck!!! - The factory pipe on a G35 is super restrictive and small in diameter compared to the Z tube. Installation wasn't hard and pretty straight forward. Now in terms of performance, best bang for the buck bolt-on mod when coupled with the JWT pop charger. There's an aggressive growl you can hear and feel anytime you get on it. I'm 100% sure you'll love this thing as much as I do.

## Features

- Roto-Molded Plastic Tubing Like the 350Z
- Isolates Incoming Air From Engine Heat
- Use With Stock Airbox or for Maximum Gains Add the STILLEN Intake
- Does Not Include Intake

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HL10PQ |
| Brand | STILLEN |
| Customer Reviews | 4.5 4.5 out of 5 stars (72) |
| Date First Available | February 1, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.1 pounds |
| Item model number | 403235 |
| Manufacturer | STILLEN |
| Manufacturer Part Number | 403235 |

## Product Details

- **Brand:** STILLEN
- **Manufacturer:** STILLEN
- **Material:** Plastic

## Images

![STILLEN 403235 Z-Tube Without Intake - 03-07 G35 Coupe / 03-06 G35 Sedan / 03-08 FX35 - Image 1](https://m.media-amazon.com/images/I/61kuVk+mHAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best performance upgrade for G35 under $100
*by B***T on January 6, 2017*

Great low priced upgrade for my 03 G35 coupe. Installed by myself with a screw driver & 10mm socket. Feels more responsive and sounds better. Also, got a Stillen license plate frame! Nice surprise very pleased.

### ⭐⭐⭐⭐⭐ Best bang for your buck!!!
*by R***E on September 1, 2015*

The factory pipe on a G35 is super restrictive and small in diameter compared to the Z tube. Installation wasn't hard and pretty straight forward. Now in terms of performance, best bang for the buck bolt-on mod when coupled with the JWT pop charger. There's an aggressive growl you can hear and feel anytime you get on it. I'm 100% sure you'll love this thing as much as I do.

### ⭐ 2 star don't recomend this product.
*by R***B on April 8, 2016*

Not cool at all ,the plastic just melted and deformed . I don't recommend this product at all .

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**Shop now:** [https://www.desertcart.fi/products/7706125-stillen-403235-z-tube-without-intake-03-07-g35-coupe](https://www.desertcart.fi/products/7706125-stillen-403235-z-tube-without-intake-03-07-g35-coupe)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-20*