Peak efficiency of your Buick's engine is reached when a good supply of air is flowing into the combustion chamber and when the exhaust can freely flow out of the chamber. Many things can impede the exhaust travel, but the first potential obstacles are the Buick headers. The Buick headers connect to each side of the engine with one intake tube for each piston. Careful engineering ensures that the tube at each cylinder is the same length by the time it reaches the collection tubes for the headers, in order to provide similar exhaust backpressure. The collection tubes of the Buick headers must be sufficiently large enough to collect all of the exhaust gasses, without allowing them to slow down. Any impedance to the flow of the exhaust robs power from the engine, by forcing it to do more work as the pistons rise in the exhaust stroke. Reducing backpressure is the key to producing more horsepower, and in our online catalog, you can find Buick headers that have been specially designed to do just that. By maximizing the efficiency of the bends with computer-aided design and by enlarging the diameters of the pipes, our high-performance Buick headers reduce the obstacles to exhaust flowing freely. With an easy bolt-on design, a set of new Buick headers is an inexpensive and easy way to add a little more power to your vehicle. In addition to the assortment of Buick headers, our online catalog also has hundreds of other Buick parts and accessories to choose from, in stock and ready to ship. You can order your Buick headers, or any other Buick part or accessory you need, online or by dialing our 24-hour toll-free telephone number.