I would recommend getting a 180 degree thermostat stock is 190 i have the 180 in mine and i hardly get it over 190 i got mine at a carquest dealer i believe.
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99 2500 4x4 / Edge EZ / Isspro Fuel Gauge / Turbo Timer / Raptor 150 / Scan Gauge II
06 2500 4X4 / Edge Attitude / Straight Piped