Toyota 4Runner Air Injection Pumps & Components

An air injection pump is a sample of yet another emissions reduction technique applied to internal combustion engines. Known as the secondary air injection, this approach suggests the addition of fresh atmospheric air to the exhaust system either in a natural way, by simply opening a valve, or forcefully, by means of a pump boosting air into the system. Working when the engine is cold, the secondary air injection ensures the oxidation of unburnt hydrocarbons and allows the catalytic converter to promptly reach its operating temperature. The operation of this system has to be adequate, so the condition of the air injection pump needs to be maintained at a decent level.

All of Toyota 4Runner’s generations feature a forced air injection system relying on a pump. If something is wrong with this part, then the system won’t be working properly, causing increased emissions and a somewhat odd behavior of the cold engine. Fortunately, it’s not that expensive to fix, especially if you purchase the replacement in our store. We’ve gathered a great diversity of quality Toyota 4Runner air injection pumps & components and made them available at a reasonable cost.