The Department of Defense, through the Defense Logistics Agency (DLA Land and Maritime), is seeking quotes for the procurement of three units of the HEATER, COOLANT, ENGI, identified by NSN 2990123855985. This solicitation is part of a combined synopsis/solicitation process, and the approved source for this item is D8266 0002039496/87, indicating its critical role in engine accessory applications. Interested vendors must submit their quotes electronically, as hard copies will not be provided, and the deadline for delivery to DLA Distribution Warner Robins is set for 126 days after award. For inquiries, potential bidders can reach out via email to DibbsBSM@dla.mil.