BMW E46 E39 Z4 Stainless Steel Exhaust Headers – 2.5L 2.8L 3.0L Inline-6

Upgrade your BMW’s exhaust system with these performance stainless-steel headers. Designed for select BMW E46, E39, and Z4 models equipped with 2.5L, 2.8L, or 3.0L inline-six engines, these headers improve exhaust flow while delivering a more aggressive exhaust tone. Features: Durable stainless-steel construction Mandrel-bent tubing for improved exhaust flow Designed to increase performance and throttle response Sportier, more aggressive exhaust sound Direct replacement design for select applications Includes the components shown in the product photos Fitment: Select BMW E46 models Select BMW E39 models Select BMW Z4 models 2.5L, 2.8L, and 3.0L inline-six engines Approximate model years: 2001–2006 Professional installation is strongly recommended. Additional modification, tuning, gaskets, hardware, or oxygen-sensor extensions may be required depending on the vehicle. Please verify your vehicle’s year, model, engine, and exhaust configuration before ordering. For off-road and competition use only where required by law. Not legal for use on pollution-controlled vehicles in certain states or jurisdictions. Frequently Asked Questions Will these headers fit my BMW? These headers are designed for select BMW E46, E39, and Z4 models with 2.5L, 2.8L, or 3.0L inline-six engines, generally from model years 2001–2006. Fitment can vary by engine code, model year, and exhaust configuration, so please confirm those details before ordering. How can I verify compatibility before purchasing? Send us your BMW’s year, exact model, engine size, and engine code, if available. Providing your VIN can also help with fitment verification. Because vehicles may have different exhaust configurations, compatibility cannot be determined by model year alone. Which engine codes are compatible? Compatibility depends on the specific application and exhaust layout. Please confirm your engine code before ordering rather than relying only on the advertised engine displacement. Will these headers increase horsepower? The mandrel-bent design can improve exhaust flow and throttle response. Actual power gains vary depending on the vehicle, engine condition, exhaust system, tuning, and other modifications, so a specific horsepower increase is not guaranteed. Will they make my BMW louder? Yes. These headers are designed to produce a sportier, more aggressive exhaust tone. The final sound and volume will also depend on your catalytic converters, resonators, muffler, and the rest of the exhaust setup. Is professional installation required? Professional installation is strongly recommended. Exhaust components can be difficult to access, and installation may require adjustments based on the vehicle’s existing exhaust configuration. Are these a direct bolt-on replacement? They have a direct-replacement design for select applications, but they are not guaranteed to be a completely modification-free installation on every vehicle. Welding, exhaust adjustments, oxygen-sensor extensions, or additional hardware may be required. Are gaskets and installation hardware included? The package includes the components shown in the product photos. Unless a gasket, bolt, clamp, or other item is clearly pictured or listed, please do not assume it is included. Will I need an ECU tune after installation? Tuning requirements vary by vehicle and setup. A tune may be recommended to optimize performance or address warning lights caused by changes to the factory emissions system. Consult a qualified BMW performance shop or tuner. Will these headers cause a check-engine light? A check-engine light is possible, particularly if installation changes catalytic-converter or oxygen-sensor operation. Oxygen-sensor extensions, additional modifications, or tuning may be needed depending on the vehicle. Do these headers retain the factory catalytic converters? That depends on the vehicle and its exhaust configuration. Compare the product photos with your original system and consult your installer before purchasing. Removing or relocating emissions equipment may not be legal for street use. Are oxygen-sensor extensions included? Only the components shown in the product photos are included. Oxygen-sensor extensions may need to be purchased separately if required for your application. Are these headers street legal? They are intended for off-road or competition use where required by law. They may not be legal for use on pollution-controlled vehicles in certain states or jurisdictions. Buyers are responsible for checking applicable local and state regulations. Will they pass an emissions inspection? Passing an inspection is not guaranteed. Results depend on local regulations, the vehicle’s emissions equipment, its tune, and how the headers are installed. What material are the headers made from? They are manufactured from durable stainless steel and use mandrel-bent tubing to support smoother exhaust flow. What should I check when the package arrives? Inspect all components for shipping damage and compare them with the product photos before beginning installation. Test-fit the parts before making permanent modifications.