This solicitation is for 586 units of a critical safety item, with delivery FOB origin. It is issued under emergency acquisition flexibilities as a sole-source action under FAR 6.302-1, and only government-approved sources are solicited. Offers must be for newly manufactured spares only; refurbished or repaired material is ineligible. New sources must submit a source approval request, but approval time typically cannot be accommodated for this urgent requirement. Interested responsible parties may submit capability statements, but this notice is not a request for competitive proposals.