Subaru STI Turbo Inlet Hose - Torque Solution - HD Cast Aluminum 3.3in FP Hard - 04-21. A direct-fit, high-durability replacement for the factory inlet, designed for enthusiasts who want a robust and consistent connection between the turbo and intake plumbing.

This Torque Solution inlet is made from heavy-duty cast aluminum with a 3.3-inch inner diameter and a hard FP configuration. It replaces the stock rubber hose to provide a more rigid, heat-resistant pathway for boosted air and mounts using OE-style flanges for straightforward installation. Compatible with 02-07 Subaru WRX and 04-21 Subaru STI applications (as specified by the manufacturer), it suits builds where durability and repeatable fitment matter.

Features

• HD cast aluminum construction for long-term durability
• 3.3" inner diameter to match common turbo plumbing
• Hard FP style for a firm, consistent connection
• Direct-fit design using factory mounting points
• Designed to resist heat and collapse compared to stock rubber

This inlet is ideal for owners upgrading intake plumbing, repairing aged stock components, or preparing a car for further modifications. It’s a practical, no-surprises part that maintains proper fitment while reducing the flex and wear issues of OEM hoses.

If you have questions or want help confirming fitment, call us directly at 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations — Austin, Texas and the Los Angeles, California area — where we offer installation and customization services. If you’re planning to purchase multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov