Subaru WRX STI H4 2.5L Left Right Secondary Air Injection Check Valve 911170

Ensure optimal performance for your Subaru WRX STI H4 2.5L with this aftermarket Left and Right Secondary Air Injection Check Valve set. Designed to fit perfectly and maintain your vehicle’s emission system efficiency, these valves are a reliable replacement option. Please note, this is an aftermarket part and not an OEM component. Easy to install and built to last, they help keep your engine running clean and smooth. Ideal for restoring proper air injection function and improving overall engine health Compatibility may vary depending on the machine's serial number. Please verify fitment before purchase.