Airflow is crucial for your Geo's engine to produce power, but not just incoming air. Air flowing out of the combustion chamber must also flow freely, and that job falls on the Geo headers first. Attached to the output port of the cylinders, the Geo headers carry the exhaust gases to the rest of the exhaust system. When a bottleneck appears in this crucial area, the engine must work harder to produce power. The Geo headers take the exhaust gases from each cylinder, carry them down through equal length tubes, and combine the output from each cylinder into the collector tubes. Every bend must be designed to provide maximum airflow ability, while taking care not to introduce any unneeded turbulence or pockets of dead flow into the exhaust stream. Once the exhaust reaches the collector pipes of the Geo headers, the pipes must be sufficiently large enough to take all of the streams from each cylinder and combine them, without restrictions to the flow. This seems simple enough, but a large amount of engineering time is spent to perfect the process. Eventually, the heat and corrosion will start to decay your Geo headers, causing them to loose efficiency. When it is time to have them replaced, feel free to visit our online catalog, where you will find a new set of Geo headers, as well as hundreds of other parts and accessories for your car. Our Geo headers meet the specifications of the original parts, so they will install easily. Furthermore, because they are made of the best materials, they will last at least as long as the original Geo headers. You can order your Geo headers today online or via our toll-free telephone number, and you'll soon see your package arrive on your doorstep, ready for a hassle free installation.