This idler pulley is a perfect fit for Cummins diesel engines M11 QSM ISM. It is a high-quality replacement part that ensures reliable and efficient performance. The manufacturer part number of this pulley is 4319418, and it is made in China. The OE/OEM part number of this idler pulley is also 4319418X. Buy with confidence and enjoy trouble-free operation with this top-quality idler pulley.