The Case IH KRV40390 is a genuine OEM friction plate designed for various Case IH JX series utility tractors. This essential component is crucial for the proper functioning of the transmission or clutch system, facilitating smooth engagement and efficient power transfer. The KRV40390 part number has been superseded by Case IH part number 87340062, ensuring continued availability of this critical replacement part for models including JX100U, JX1070U, JX1080U, JX1090U, JX1100U, JX70U, JX80U, and JX90U.