Description: Fits 4Runner, Land Cruiser, Sequoia, TundraAir Injection System Air Pump - Repair or ReplaceA failed air Injection pump or secondary air pump 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. Left. Tundra. 4.7l.