Description: Fits Tundra Air Injection System Check Valve - Repair or ReplaceA failed air Injection solenoid or secondary air valve will often have no noticeable symptoms beyond a check Engine light, but it does cause your Toyota to operate inefficiently and produce higher emissions. Our technicians have Access to manufacturer-approved repair processes and Toyota genuine parts. Tundra. 4.0l. Air switching. 4.0L, air pump and related components, 2007-10.