The tension wheel is suitable for Mercedes-Benz. OE 274 202 00 19

The tensioner is a belt tensioner used in automobile transmission system, which is mainly composed of a fixed shell, a tensioner arm, a wheel body, a torsion spring, a rolling bearing and a spring shaft sleeve, etc. It can automatically adjust the tension according to the different tightness of the belt, making the transmission system stable, safe and reliable.
The tensioner is used to adjust the tightness of the timing belt. Generally, it is replaced with the timing belt to avoid worries. There is no need to replace other parts. Just maintain them regularly.