COBB Subaru Cast Turbo Inlet WRX 2015-2021, Forester XT 2014-2018

Eliminate the Weak Link in Your Intake System

If you own a 2015-2021 WRX or a 2014-2018 Forester XT, your factory turbo inlet is a ticking time bomb. Made from thin, fragile plastic, the OEM unit is prone to cracking at the mounting flange after years of heat cycles. This leads to boost leaks, poor idling, and potential engine damage.

The COBB Cast Turbo Inlet is the definitive "fix-it-once" solution. By replacing the restrictive plastic piece with a heavy-duty, oversized cast aluminum unit, you’re not just increasing reliability—you’re significantly improving the airflow path to your turbocharger.

Performance Meets Reliability
The COBB inlet features a larger internal diameter and a much smoother internal surface than the stock piece. This reduction in turbulence allows the turbo to spool faster and maintain efficiency more effectively throughout the RPM range.Designed to be a direct bolt-on replacement, this inlet is compatible with the factory intake, the COBB Big SF Intake, and most other aftermarket intake systems. Whether you are running a stock tune or a Stage 2+ setup, this is an essential upgrade for any FA20 owner.

The inlet ID has been expanded by 5mm to 70mm and the outlet is 2mm larger than stock, matching the factory compressor inlet of 50mm. Features include mounting provisions for either stock or COBB Electronic Boost Control Solenoids, and threaded ports to accept factory sized PCV and EVAP fittings (included). Replace the brittle factory BPV connection with a more robust reinforced silicone coupler to eliminate a common source of air leaks. A captive o-ring is placed on the turbocharger side for leak-free installation.

Flats on either side of the inlet allow for the addition of auxiliary pressure sensors, temperature sensors, etc.

Why?

The factory turbo inlet on the 2015-2021 Subaru WRX is made out of hardened plastic and is prone to failure after years of heat cycling. Cracking in the factory piece or connectors can lead to troublesome air leaks that are difficult to diagnose. The COBB Turbo Inlet is more robust and offers a measurable airflow increase over stock.

Features

Subaru Cast Turbo Inlet WRX 2015-2021, Forester XT 2014-2018

• Cast Aluminum Construction
• Maximizes Airflow to Turbocharger
• Directly Replaces Failure Prone OEM Components
• Port Matched to Compressor Inlet
• Compatible With COBB OTS Maps and Packages

Emissions

50 State Legal.
This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number: D-660-82

Details

1. Dovetailed o-ring groove to fully capture o-ring for installation, perfect seal against machined compressor housing face
2. Threaded port for PCV connection with included barb or white PCV connector fittings, for ease of installation
3. Silicone BPV coupler is far more robust than OEM plastic
4. EVAP port same size and ID as OEM

Installation Instructions

View the COBB Cast Turbo Inlet Instructions