A BMW 740IL catalytic converter reduces the harmful emissions produced by the process of internal combustion. It treats the exhaust before it exits via the tailpipe with a catalyst resembling a honeycomb, coated with platinum and palladium (which is one reason why they tend to be expensive - but read on). This platinum catalyst takes the harmful compounds that cause acid rain and toxic smog - carbon monoxide, hydrocarbons and nitrous oxide - and breaks their molecular bonds, changing all of it into relatively innocuous CO2 and water vapor.

This is why lead has now been removed from all motor fuels. Now, if your engine is out of tune, or running too "rich," unburned fuel may wind up being passed into the exhaust system.

In the old days, this unburned fuel would sometimes explode in the tailpipe, creating a backfire. With the BMW 740IL Catalytic Converter, unburned gas may explode in the device itself, melting its components and causing it to clog. You car's performance can be significantly reduced. There's a simple method for checking your BMW 740IL Catalytic Converter. First, remove the old oxygen sensor and exhaust pipe. Next, rev the engine to 4000 RPM. A whistling sound indicates the device is blocked. Other indications include bad-smelling exhaust and a noticeable reduction in power. A new BMW 740IL Catalytic Converter can be pricey, but it will cost you significantly less when you buy from us. Log on and take a look at our online catalog to see the great discount prices we have on a complete line of BMW parts and accessories.Whether it’s your catalytic converter or anything else, you save time and money when you visit us first.