This is a firm fixed-price contract for a corrosion-resistant steel combustion chamber liner for the T56 aircraft engine, with estimated quantities between 75 and 150 units. All units must be delivered to the destination SW3211 on or before October 1, 2027, with an initial quantity of 10 units required by January 1, 2027. The item is designated as a Critical Safety Item and performance will be at Tinker AFB, Oklahoma. The government has identified qualified sources but states all responsible sources may submit a proposal. Electronic procedures will be used for the solicitation.