Buy OEM Mercedes-Benz 420SEL Exhaust Components

The exhaust in your Mercedes-Benz 420 SEL stops working right, and it'll start failing emissions tests and polluting the environment. The sedan you love may even end up running afoul of the law. Keep that from happening; if it's got problems, repair it sooner rather than later. You can shop the OEM-quality replacement parts you need, right here at MB Part Source. Our prices are competitive, and we offer fast nationwide shipping; order now to take advantage of both.

All About Exhaust Systems for Mercedes-Benz 420 SEL

The exhaust in your 420 SEL removes the noxious byproducts created when the car's engine burns air and fuel for power. How it works is simple: first, nitrogen oxide and other pollutants pass through the catalytic converter; there, platinum-group metals -- rhodium, palladium, and so on -- split them into nitrogen (N) and oxygen (O); the former get held back and the latter flow onward; hydrocarbons and carbon monoxide burn up; the muffler and resonator keep air flowing while cutting down on noise; and cleaner gases (carbon dioxide and water vapor, mainly) head to the exhaust pipe via the exhaust manifold, enter the tail pipe, and flow out, dissipating. You'll know the car's exhaust is faulty from signs like the Check Engine on the dash, gas mileage worsening, unusual noises from the muffler and/or exhaust pipe, and a sulfuric odor like rotten eggs. Notice any, and you should run an exhaust inspection (or have a Mercedes-Benz service center take care of it), changing any parts that the results recommend. Otherwise, the resonator and/or muffler get replaced about every 2 to 4 years, and the catalytic converter, every 100,000 miles or so. Be sure to use OEM replacement parts. Exhaust replacement cost can vary depending on the part, on what kind of fixes you need, and whether or not you have the job done by a mechanic. Exhaust Manifold Replacement, for example, may run $870 to $975 or more on average, according to recent RepairPal data.