Genuine Vs OEM

The car you bought, whether it is German-made, American-made, Japanese-made etc., is made up of parts made by hundreds of other companies.  All car manufacturers use independent companies to design and make various components that make up a car.

Popular Abbreviations

MT = Manual transmission

AT = Automatic transmission

RWD = Rear Wheel Drive

Know your Engine and Chassis Code

When ordering parts, it's important to realize that that your Engine and Chassis Code can make a world of difference.  For example this chart here is all the W220 chassis' . As you can see, the W220 spans about 8 years and covers engines from 6 cylinders to 12 cylinders so of course the parts are different.   Don't forget to read the entire page and application chart before ordering.

Pre-gapped plugs... Are they a myth?

The gap between the center and side electrodes of a spark plug must be a fixed distance. Tip temperature and the voltage necessary to fire the plug are directly affected by the spark plug's gap. Adjusting the distance between electrodes using a feeler gauge is called gapping a spark plug.

The Ebay Return Process