One New Aftermarket Replacement Thermostat With Gasket Fits FARMALL Fits International Harvester (IH) Tractor Models: H, HV, M, MV, Super MTA, 300, 350, 400, 450, 600, 650, W4, W6, W9 Kit Includes: (1) Thermostat (387533R91) (1) Gasket (54984DA) Thermostat has opening temperature of 160 degrees F / 71 degrees C. Replaces Part Numbers: 387533R91-45984DA-KIT, 387533R91, 45984DA