The Cummins ISX 12 GR is a reliable and efficient product that offers exceptional performance. With a 15.0L engine and 912 cubic inches, it delivers power and durability. Equipped with a 12-ribbed serpentine belt pulley and OEM pump number 4089910, it fits most Cummins ISX 12 GR makes and models. This product is designed to provide practicality and convenience, ensuring smooth operation and optimal functionality. Trust the Cummins ISX 12 GR for a dependable and efficient solution to meet your needs.