The U.S. Coast Guard seeks quotes for 10 oil centrifuge assemblies (Rolls-Royce part X00004443, superseded to X53118300012) for the 8V396 TE94 main diesel engine on 87 WPB vessels. Award will be on an all-or-none basis, lowest price technically acceptable, under a firm fixed-price contract. Brand name is mandatory unless an equal product meets the specified salient characteristics and is accepted by the USCG. Strict MIL-STD packaging, packing, marking, and barcode requirements apply; standard commercial packaging is unacceptable and noncompliance may result in rejection. Offerors must be registered in SAM with a valid DUNS number and submit required representations and certifications.