Without your BMW 740i catalytic converter, your car would pose a serious environmental threat. Your 740i catalytic converter is an important and often misunderstood component of your car's exhaust system. The BMW 740i catalytic converter is a honeycomb filter that is located in an enlarged section of your exhaust pipe.

As exhaust passes from your engine through your exhaust system, your 740i catalytic converter works to purge the toxic gases and send clean exhaust out through your tailpipe. To accomplish this amazing task, the BMW 740i catalytic converter uses small amounts of platinum, palladium and rhodium that are embedded inside the filter.

These precious metals serve as catalysts to create a chemical reaction. Your 740i catalytic converter smashes pollutant molecules—carbon monoxide, nitrous oxide, and hydrocarbons—and reforms them into environmentally friendly nitrogen, water vapor, and carbon dioxide. This harmless gas mixture is then released through your tailpipe. Outside of saving the environment, your BMW 740i catalytic converter also assists in smooth engine performance. If your engine is sluggish or chugging along, the problem may be with your 740i catalytic converter. Unfortunately, a faulty BMW 740i catalytic converter is difficult to detect and expensive to replace. An emissions test will sometimes uncover a bad 740i catalytic converter. If you need to replace your BMW 740i catalytic converter, you will find the part you need in our extensive online catalogue at a great discount price.We will ship your new 740i catalytic converter right to your door when you place your order through our secure online server or by calling our toll-free customer service number to speak with our knowledgeable and friendly staff.