Detroit Diesel Thermostats - Detroit Diesel 371 Thermostats Section Loading... 1 Detroit Diesel Thermostat for 371, 471, 671 173 degrees Price: $ 51.97 Qty: ^ Pictures In Stock Add to Cart 2 371 DETROIT DIESEL PARTS | NATURAL 2 VALVE ENGINE See all parts for 371 DETROIT DIESEL PARTS | NATURAL 2 VALVE ENGINE 3 371 DETROIT DIESEL PARTS | NATURAL 4 VALVE ENGINE See all parts for 371 DETROIT DIESEL PARTS | NATURAL 4 VALVE ENGINE