This opportunity is for the procurement of 19 Pump Axial Pistons (NSN 1650-01-621-4034), which are spare parts used on the F-15 aircraft to provide cooling fluid to the radar tracking system. The required delivery date for the first unit is 29 October 2027, with early delivery acceptable, and performance will take place at Tinker AFB, Oklahoma. Qualification requirements exist for this item, and the only known qualified source is Triumph Thermal Systems LLC. The government intends to solicit and negotiate with a limited number of sources under FAR 6.302, but all responsible sources may submit a proposal for consideration. No specific budget amount is provided in the description.