How to bid on Heat Interchanger, Refrigerant for the Defense Logistics Agency

What the agency is buying

The Defense Logistics Agency (DLA) is seeking proposals for refrigerant heat interchangers. The National Stock Number (NSN) is 4130-01-365-2740, and the part number is A71-D2416 from RIX Industries (CAGE: 28953). The estimated annual quantity is 11 units.

This is a total small business set-aside opportunity. The contract will be a Firm-Fixed-Price, Indefinite Delivery/Indefinite Quantity (IDIQ) contract with a performance period of up to three years (a two-year base and a one-year option). The guaranteed minimum is $163,000, and the maximum is $4,500,000. Delivery is required 365 days after each delivery order.

Key dates and deadlines

The solicitation, SPE8E526R0003, was published on July 15, 2026. Proposals are due by August 14, 2026, at 3:00 PM Eastern Time. It is important to submit your proposal before this deadline, as late submissions may be rejected.

Who this opportunity suits

This opportunity is specifically for small businesses. Firms that can supply refrigerant heat interchangers, particularly those familiar with the specified NSN and part number, are suitable. If you offer an alternate part, you must provide a complete technical data package for evaluation.

How to respond

To access the solicitation, you need to go to the DLA Internet Bid Board System (DIBBS). Search for solicitation number SPE8E526R0003. You are responsible for downloading the Request for Proposal (RFP) and monitoring the site for any amendments.

You must be currently registered in the System for Award Management (SAM) to submit a proposal. Failure to respond to the posted RFP and any amendments before the deadline may result in your offer being considered non-responsive.

Tips for a competitive response

Since price is the only evaluation factor for this acquisition, focus on submitting your most competitive pricing for each year of the contract. Ensure your pricing is clearly presented for the base period and the option year.

If you are proposing an alternate part, make sure your technical data package is comprehensive and clearly demonstrates that your alternate meets or exceeds the requirements. Double-check all submission requirements to avoid any errors that could lead to rejection.