Pacemaker is a specialist header and extractor brand, focused on replacing the restrictive factory exhaust manifold with tuned-length tubular headers for better exhaust flow right from the cylinder head. Headers are one of the more overlooked upgrades in an exhaust system, but they sit at the very start of the flow path, ahead of the catalytic converter and the rest of your cat-back system. We stock Pacemaker headers for Ford, Holden, Toyota, Mitsubishi and Chrysler applications.