Evaporative System Integrity Module Detector - Mopar (4861959AD)

This OEM Mopar evaporative system integrity module detector, part number 4861959AD or 04861959ad, is compatible with select RAM 1500 trucks -- namely, the 2022 model. More specifically, it fits trims ranging from Tradesman, Big Horn, Laramie, and Limited to Limited Longhorn, Lone Star, Rebel, and TRX. Also called an evaporative system integrity monitor or ESIM, it's a critical part of the pickup's emission control (EVAP) system. It replaces Mopar ESIMs from the factory with part numbers 4861959AA, 4861959AB, 4861959AC, 52855827AA, and 52855827AB. Note: part included with #1 vapor canister.