Dorman OE Solutions Diesel Thermostat Housing And Seal Kit - 904-486 Part #: 904-486 Line: DOR Dorman OE Solutions Diesel Thermostat Housing And Seal Kit Limited Lifetime Warranty Material: Steel Thread Size: M6-1.0 Bolts Included: Yes Gasket Inside Diameter (mm): 55.5mm Thread Length (mm): 24.5mm Gasket Or Seal Included: Yes Flange Plate Inside Diameter (mm): 54.5mm Show More Show Less