A SCR crosshead from Tratter serves as a link of the AdBlue filler neck into the dedicated tank and is used on some vehicles of the Volkswagen Golf platform. The term “selective catalytic reduction (SCR)” refers to a technique for reducing nitrogen oxides in exhaust gases coming out of internal combustion engines. The reaction involves combining the nitrogen oxides with ammonia to form nitrogen.
![SCR crosshead - VW 1 SCR crosshead - VW SCR Traverse 3](https://trattereng.com/wp-content/uploads/2022/02/SCR-Traverse-3.jpg)