There is nothing more complicated than the whole operation that takes place inside a car. Try remembering each car part and their function and you will surely have a hard time. But perhaps you can remember the function of an oxygen sensor in your Isuzu Pickup. An oxygen sensor was first installed in the exhaust system during the 1980s. It is placed on the exhaust pipe to read the quality of fuel-air mixture during the engine combustion process. The Replacement Oxygen Sensor is one of the better choices if you have a 1991-1994 Isuzu Pickup. It determines whether the fuel mixture is lean or rich and sends the reading to the car’s engine management computer. The Replacement Oxygen Sensor USOS-4000 is crafted from high-quality materials that are durable and efficient even for a long time. It is designed with two gaps on each side to serve as passageways of the exhaust gas. This oxygen sensor contains a chemical reactor that produces the right amount of electricity needed to identify the type of fuel-air mixture. The Isuzu Pickup 1991-1994 Replacement Oxygen Sensor is an excellent power booster and greatly helps in minimizing fuel consumption. It enables your various engine parts to perform at their best level without pushing them to their limit. Check out our home page in the internet for a comprehensive list of our available products. You can order the Replacement oxygen sensor thru our toll-free customer hotline or visit our online store. We have customer service representatives who will assist you with your shopping needs.