The Kenworth T800 Stainless Steel Lower Coolant Tube is a durable and reliable replacement part for Kenworth T800 models with Cummins ISX engines. Constructed from 304 stainless steel, this coolant tube is built to last and withstand the demands of heavy-duty trucking. It is sold individually and fits most Kenworth T800 models with Cummins ISX engines. With OEM and aftermarket numbers F66-1953, this coolant tube is a practical and essential component for maintaining the cooling system of your Kenworth T800 truck.