Review on 🚗 Mishimoto MMTS-JGC-99L Jeep Grand Cherokee 3.7L/4.7L Racing Thermostat 1999-2010: Performance Upgrade for Optimal Engine Cooling by Dave Rasic

JEEP GRAND CHEROKEE 4.7 2007 I RUN OVER 2000 MILES ON IT AND VERY SATISFIED. ENGINE TEMP REMAINS LOW EVEN ON THE 110 degree DAYS I spent in Arizona this month. I HAVE A HYPERTECH POWER PROGRAMMER THAT SOMETIMES THE CAR HEATS AND OVERHEATS EVEN ON THE LOWEST SETTING. I HAD TO RETURN TO STOCK BEFORE I ADDED THIS THERMOSTAT WHICH IMMEDIATELY SOLVED THE OVERHEATING PROBLEM AND NOW I CAN USE THE HIGHEST SETTING WITHOUT A SENSOR, EVEN TOUCHING THE HALF MARK ON THE SENSOR. EVEN IN THE FACTORY SETTING THE ENGINE SEEMS TO PULL A BIT HARDER AND WORK BETTER. AND YES, IT COMES WITH THE REQUIRED GASKET, EVEN THE DESCRIPTION SAYS IT COMES NO GASKET. BECAUSE THESE CARS DON'T HAVE A BODY SEAL LIKE THE OLD CARS. RUBBER AROUND THE THERMOSTAT SEALS. A VERY SIMPLE MODIFICATION THAT I RECOMMEND EVEN ON THE STANDARD ENGINE.