This is a total small business set-aside solicitation for a heat exchanger (HEAT INTERCHANGER,R), with no drawings or technical data available for the item. Only authorized distributors of the original manufacturer's item identified by cage code 38450 and reference FSL-30-5806C003B will be considered for award. The contract requires MIL-STD-130 marking, MIL-STD 2073 packaging, inspection and acceptance at source, and electronic invoice submission via PIEE-WAWF. Award will be made on a lowest price technically acceptable (LPTA) basis, with compliance to all quality assurance and production facility requirements.