Autotecnica SU0318828 Secondary Air Injection Check Valve - Right

Secondary Air Injection Check Valve for Subaru

Autotecnica SU0318828 is a secondary air injection check valve built for Subaru emissions systems that need precise airflow control. It uses an aluminum body, a 2-port layout, and an M6x1.0 thread specification to support a direct replacement on select Subaru WRX STI, Impreza, and Forester applications.

Key Features

• Secondary air injection check valve for emission control service
• Aluminum construction for corrosion-resistant durability
• 2-port design for Subaru air injection routing
• M6x1.0 thread diameter with 5 mm mounting hole diameter
• 115 mm overall length
• Non-adjustable replacement part
• Autotecnica part number SU0318828

Detailed Description

This Autotecnica secondary air injection check valve is engineered as an OE-style replacement for Subaru emission control repairs. It is used in the air injection system to help manage exhaust flow during cold-start operation, supporting proper emissions-system function on 2013-2019 Subaru WRX STI, 2006-2014 Subaru Impreza, and 2005-2013 Subaru Forester, right side applications. This part cross-references Dorman - OE Solutions 911-170 for the same application.

Autotecnica SU0318828 is manufactured to ISO/TS 16949 QMS specifications and is positioned as a replacement option for technicians and DIY owners who need a part that aligns with OEM-level fit and function expectations. The aluminum housing and specified mounting dimensions help simplify selection when replacing a worn or sticking secondary air injection check valve on Subaru WRX STI, Impreza, or Forester models.

What It Helps Fix

• Secondary air injection fault codes related to valve operation
• Emissions-test failures caused by air injection system malfunction
• Rough cold-start behavior tied to improper exhaust air routing
• Check valve leakage that can affect system performance
• Replacement needs for a damaged or corroded Subaru air injection valve

Installation Notes and Tips

Verify the right-side location, thread size, mounting hole diameter, and port layout before installation. Confirm vehicle year and model against the listed fitment for 2013-2019 Subaru WRX STI, 2006-2014 Subaru Impreza, and 2005-2013 Subaru Forester, right. Inspect related air injection hoses, connectors, and passages during service so the replacement valve can operate correctly.

Quality Assurance

Autotecnica manufactures aftermarket parts under ISO/TS 16949 QMS specifications and backs this part with a two-year, unlimited mileage warranty.