Top 100 Contractors in PSC 2815: Diesel Engines and Components, FY2021

Name: Top 100 Contractors in PSC 2815: Diesel Engines and Components, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 92% of FY2021 PSC 2815 contract dollars

Contract obligations: $592,633,933 Net of deobligations, by contracts coded PSC 2815
Contractors: 278 Parent companies with an obligation
Largest contractor: Rolls-Royce Military Aero Engines Ltd $388 million, 64.9% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Rolls-Royce Military Aero Engines Ltd Through Rolls-Royce Solutions America Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$388,382,764	64.9%	Rank history: #4 in FY2022, #13 in FY2023, #33 in FY2024 and not on the FY2025 list; up 32 since FY2020.
2	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$54,227,170	9.1%	Rank history: #11 in FY2022, #21 in FY2023, #10 in FY2024 and #4 in FY2025; up 2 since FY2020.
3	Cummins Inc. 7 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$43,145,397	7.2%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since FY2020.
4	Fairbanks Morse LLC 6 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$17,501,893	2.9%	Rank history: #3 in FY2022, #2 in FY2023, #11 in FY2024 and #25 in FY2025; up 10 since FY2020.
5	Am General LLC 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$12,403,456	2.1%	Rank history: #1 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; new, not ranked in FY2020.
6	Caterpillar Inc. 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$11,874,727	2.0%	Rank history: #9 in FY2022, #4 in FY2023, #12 in FY2024 and #11 in FY2025; up 3 since FY2020.
7	EOS Inc. 2 awardees, including Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$7,106,799	1.2%	Rank history: #23 in FY2022, #7 in FY2023, #6 in FY2024 and #2 in FY2025; down 1 since FY2020.
8	Jgils, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$5,801,221	1.0%	Rank history: #18 in FY2022, #6 in FY2023, #9 in FY2024 and #7 in FY2025; up 2 since FY2020.
9	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$5,349,724	0.9%	Rank history: #21 in FY2022, #71 in FY2023, #88 in FY2024 and #71 in FY2025; up 6 since FY2020.
10	Bollinger Shipyards Inc Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$5,168,092	0.9%	Rank history: #6 in FY2022, #5 in FY2023, #37 in FY2024 and not on the FY2025 list; up 6 since FY2020.
11	Melton Sales & Service Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,785,710	0.5%	Rank history: #12 in FY2022, #17 in FY2023, #17 in FY2024 and #13 in FY2025; up 2 since FY2020.
12	Pacific Power Group LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$2,643,415	0.4%	Rank history: #5 in FY2022, #11 in FY2023, #7 in FY2024 and #15 in FY2025; up 8 since FY2020.
13	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,347,396	0.4%	Rank history: #8 in FY2022, #9 in FY2023, #28 in FY2024 and not on the FY2025 list; up 9 since FY2020.
14	Fincantieri Marine Systems North America Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,205,984	0.4%	Rank history: not on the FY2022 list, #12 in FY2023, #51 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
15	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$2,015,862	0.3%	Rank history: #43 in FY2022, #23 in FY2023, #44 in FY2024 and #18 in FY2025; up 4 since FY2020.
16	Optimum Vehicle Logistics LLC Top agencies Army (Department of the Army)	$1,900,101	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	Tecmotiv Corporation Through Tecmotiv (Usa), Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,393,013	0.2%	Rank history: #15 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
18	Puckett Machinery Company Top agencies Commerce (Department of Commerce)	$1,281,924	0.2%	Rank history: not on the FY2022 list, #29 in FY2023, #38 in FY2024 and not on the FY2025 list; up 19 since FY2020.
19	Freightliner of Savannah, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,022,880	0.2%	Rank history: #29 in FY2022, not on the FY2023 list, #20 in FY2024 and #29 in FY2025; down 2 since FY2020.
20	Stauffer Diesel, Inc. Top agencies USAF (Department of the Air Force)	$966,240	0.2%	Rank history: #28 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 42 since FY2020.
21	Johnson & Towers Inc. 2 awardees, including Western Branch Diesel, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$941,423	0.2%	Rank history: #16 in FY2022, #10 in FY2023, #16 in FY2024 and #12 in FY2025; up 81 since FY2020.
22	PCX Inc. Top agencies DLA (Defense Logistics Agency)	$931,190	0.2%	Rank history: not on the FY2022–FY2023 lists, #79 in FY2024 and not on the FY2025 list; up 30 since FY2020.
23	Fluid Mechanics LLC Top agencies DLA (Defense Logistics Agency)	$872,560	0.1%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 65 since FY2020.
24	Aero-Glen International LLC Top agencies Army (Department of the Army)	$865,917	0.1%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
25	Essex Electro Engineers Inc. Top agencies USAF (Department of the Air Force)	$817,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Volkswagen AG 2 awardees, including Everllence USA Inc. and Everllence Middle East and Africa L.l.c Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$789,186	0.1%	Rank history: #37 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; up 50 since FY2020.
27	General Motors Company Top agencies DLA (Defense Logistics Agency)	$564,239	0.1%	Rank history: #33 in FY2022, #56 in FY2023, #46 in FY2024 and #62 in FY2025; up 51 since FY2020.
28	Ohio Machinery Co 3 awardees Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$532,600	0.1%	Rank history: #27 in FY2022, #34 in FY2023, #48 in FY2024 and #85 in FY2025; up 3 since FY2020.
29	The Boeing Company 2 awardees, including Boeing Distribution Services Defense LLC and Boeing Distribution Services X, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$521,092	0.1%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
30	W. W. Williams Company LLC the 5 awardees, including The W.w. Williams Company, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$520,486	0.1%	Rank history: #10 in FY2022, #24 in FY2023, #13 in FY2024 and not on the FY2025 list; up 12 since FY2020.
31	Central Diesel, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$490,254	0.1%	Rank history: #19 in FY2022, #39 in FY2023, #97 in FY2024 and not on the FY2025 list; up 5 since FY2020.
32	Clarke Power Services, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$483,503	0.1%	Rank history: #63 in FY2022, #69 in FY2023, #35 in FY2024 and #19 in FY2025; down 11 since FY2020.
33	The Entwistle Trust Through The Entwistle Company LLC Top agencies Navy (Department of the Navy)	$468,075	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
34	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$456,829	0.1%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
35	MTP Drivetrain Services L.L.C. Top agencies Army (Department of the Army)	$449,742	0.1%	Rank history: #51 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
36	The Dewey Electronics Corporation Top agencies Army (Department of the Army)	$415,809	0.1%	Rank history: not on the FY2022 list, #66 in FY2023, #59 in FY2024 and not on the FY2025 list; up 46 since FY2020.
37	Statz Corp Top agencies DLA (Defense Logistics Agency)	$415,496	0.1%	Rank history: #22 in FY2022, #40 in FY2023, #36 in FY2024 and #63 in FY2025; up 16 since FY2020.
38	Warren Pumps LLC Through Circor Naval Solutions LLC Top agencies Navy (Department of the Navy)	$391,626	0.1%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
39	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$385,118	0.1%	Rank history: #35 in FY2022, #52 in FY2023, #64 in FY2024 and #30 in FY2025; down 12 since FY2020.
40	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$349,713	0.1%	Rank history: #32 in FY2022, #31 in FY2023, #66 in FY2024 and #36 in FY2025; unchanged since FY2020.
41	Multi-Parts & Services, Inc. Top agencies DHS (Department of Homeland Security)	$320,035	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	B&R Construction Services, LLC Top agencies Treasury (Department of the Treasury)	$305,283	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency)	$301,240	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 11 since FY2020.
44	Acme Products & Engineering Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$297,090	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Talan Industries LLC Top agencies DLA (Defense Logistics Agency)	$290,250	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 64 since FY2020.
46	Central Power Systems & Services, LLC Top agencies DLA (Defense Logistics Agency)	$288,913	<0.1%	Rank history: #17 in FY2022, #32 in FY2023, #58 in FY2024 and #14 in FY2025; up 10 since FY2020.
47	Georgia State of Through Georgia Department of Human Services Top agencies DLA (Defense Logistics Agency)	$280,338	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
48	Wartsila Defense Inc. Through Defense Maritime Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$277,792	<0.1%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 87 since FY2020.
49	Schopf Maschinenbau GMBH Through Goldhofer Airport Technology GMBH Top agencies Navy (Department of the Navy)	$270,861	<0.1%	Rank history: not on the FY2022 list, #57 in FY2023 and not on the FY2024–FY2025 lists; up 173 since FY2020.
50	P & R Trading Incorporated Top agencies DLA (Defense Logistics Agency)	$258,900	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 114 since FY2020.
51	All Around Access, LLC Top agencies Army (Department of the Army)	$257,128	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Boatswain's Locker I, Incorporated Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$247,017	<0.1%	Rank history: #76 in FY2022, #65 in FY2023, #23 in FY2024 and #77 in FY2025; up 73 since FY2020.
53	C P Brodeur, Inc. Top agencies DHS (Department of Homeland Security)	$230,315	<0.1%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
54	Southern Automotive Wholesalers, Inc. Top agencies DLA (Defense Logistics Agency)	$227,492	<0.1%	Rank history: #57 in FY2022, #38 in FY2023, #34 in FY2024 and #70 in FY2025; up 45 since FY2020.
55	Washington Foundries Inc. Top agencies DLA (Defense Logistics Agency)	$202,395	<0.1%	Rank history: not on the FY2022–FY2024 lists and #56 in FY2025; new, not ranked in FY2020.
56	Novex Enterprises Top agencies DLA (Defense Logistics Agency)	$201,991	<0.1%	Rank history: #38 in FY2022, #27 in FY2023, #52 in FY2024 and #45 in FY2025; down 5 since FY2020.
57	Seahorse Defense Supply, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$200,680	<0.1%	Rank history: not on the FY2022 list, #64 in FY2023, not on the FY2024 list and #16 in FY2025; up 36 since FY2020.
58	Southeastern Equipment Company, Inc. Through Seco Parts & Equipment Co Top agencies DLA (Defense Logistics Agency)	$193,287	<0.1%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; up 68 since FY2020.
59	Global Defense Inc. Top agencies DLA (Defense Logistics Agency)	$192,483	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.
60	Askew Industrial Corporation Top agencies Navy (Department of the Navy)	$181,008	<0.1%	Rank history: #96 in FY2022, not on the FY2023 list, #25 in FY2024 and not on the FY2025 list; up 38 since FY2020.
61	Equipment Parts Sales Top agencies DLA (Defense Logistics Agency)	$178,274	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 80 since FY2020.
62	Augusta Engine Parts, Inc. Top agencies DLA (Defense Logistics Agency)	$163,497	<0.1%	Rank history: #44 in FY2022, #26 in FY2023, #27 in FY2024 and #54 in FY2025; up 11 since FY2020.
63	MJL Enterprises, LLC Top agencies Navy (Department of the Navy)	$162,683	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$157,640	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 76 since FY2020.
65	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$146,883	<0.1%	Rank history: #20 in FY2022, #77 in FY2023, #61 in FY2024 and #35 in FY2025; down 19 since FY2020.
66	Thompson Machinery Commerce Corporation Top agencies Army (Department of the Army)	$140,828	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Philadelphia Electrical Equipment Co Top agencies DHS (Department of Homeland Security)	$140,034	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Vast Industries, LLC Top agencies Army (Department of the Army)	$136,567	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Stewart & Stevenson Fdda LLC 3 awardees, including Marine Systems, Inc. and Stewart & Stevenson Power Products LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$132,128	<0.1%	Rank history: #45 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; down 43 since FY2020.
70	Stag Enterprise, Inc. Top agencies DLA (Defense Logistics Agency)	$131,546	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
71	Helmut's Marine Service Top agencies DOI (Department of the Interior)	$127,140	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Wastetrans LLC Top agencies DLA (Defense Logistics Agency)	$126,310	<0.1%	Rank history: not on the FY2022–FY2023 lists, #94 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
73	Pro-Line Procurement Services LLC Top agencies Navy (Department of the Navy)	$120,420	<0.1%	Rank history: not on the FY2022 list, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Guardian Systems LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$119,818	<0.1%	Rank history: #46 in FY2022, #33 in FY2023, #43 in FY2024 and #53 in FY2025; new, not ranked in FY2020.
75	Hatch & Kirk, Inc. Top agencies DLA (Defense Logistics Agency)	$118,750	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 64 since FY2020.
76	RDO Holdings Co. Through RDO Agriculture Equipment Co Top agencies DLA (Defense Logistics Agency)	$117,759	<0.1%	Rank history: #62 in FY2022, #51 in FY2023, #82 in FY2024 and not on the FY2025 list; up 34 since FY2020.
77	Yancey Bros. Co. Top agencies Navy (Department of the Navy)	$109,346	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
78	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$105,625	<0.1%	Rank history: #56 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; down 37 since FY2020.
79	Penn Power Group LLC Top agencies DLA (Defense Logistics Agency)	$100,975	<0.1%	Rank history: not on the FY2022–FY2023 lists, #15 in FY2024 and #9 in FY2025; down 55 since FY2020.
80	EHB Supply Top agencies Navy (Department of the Navy)	$99,880	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Dahmer Powertrain, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$98,164	<0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
82	C-Lars, LLC Top agencies NASA (National Aeronautics and Space Administration)	$95,637	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$90,194	<0.1%	Rank history: not on the FY2022 list, #50 in FY2023, not on the FY2024 list and #72 in FY2025; up 85 since FY2020.
84	American Trading Service Inc Through American Trading Services, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$89,224	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 146 since FY2020.
85	Worldwide Equipment Enterprises Inc. Through Worldwide Equipment Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$89,134	<0.1%	Rank history: #42 in FY2022, #15 in FY2023, #40 in FY2024 and not on the FY2025 list; up 67 since FY2020.
86	Bay Diesel Corp Top agencies Navy (Department of the Navy)	$88,600	<0.1%	Rank history: not on the FY2022–FY2023 lists, #92 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
87	Viking Incorporated Top agencies DLA (Defense Logistics Agency)	$85,639	<0.1%	Rank history: #92 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
88	Canal Barge Company, Inc. Through Illinois Marine Towing Inc. Top agencies Army (Department of the Army)	$81,762	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$80,512	<0.1%	Rank history: #69 in FY2022, not on the FY2023 list, #8 in FY2024 and #6 in FY2025; down 12 since FY2020.
90	Quality Defense Spares, Inc. Top agencies DLA (Defense Logistics Agency)	$80,496	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 46 since FY2020.
91	Atap Inc. Top agencies USAF (Department of the Air Force)	$80,012	<0.1%	Rank history: not on the FY2022 list, #76 in FY2023, #69 in FY2024 and #97 in FY2025; new, not ranked in FY2020.
92	JE Hurley Inc. Top agencies DLA (Defense Logistics Agency)	$79,437	<0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
93	Mechanical Equipment Company, Inc. Top agencies DLA (Defense Logistics Agency)	$78,547	<0.1%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 56 since FY2020.
94	OLB Associates LLC Top agencies DLA (Defense Logistics Agency)	$77,498	<0.1%	Rank history: #73 in FY2022, #45 in FY2023, #32 in FY2024 and #50 in FY2025; up 48 since FY2020.
95	Power Test, Inc. Top agencies Army (Department of the Army)	$76,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
96	Houston Drive Train Vehicle Component Sales, Inc. Top agencies DLA (Defense Logistics Agency)	$75,158	<0.1%	Rank history: #60 in FY2022, #35 in FY2023, #63 in FY2024 and not on the FY2025 list; down 48 since FY2020.
97	Airborne Supply Inc. Top agencies DLA (Defense Logistics Agency)	$75,119	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
98	Haller's Repair Top agencies USAF (Department of the Air Force)	$74,196	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$73,481	<0.1%	Rank history: #78 in FY2022, #49 in FY2023, not on the FY2024 list and #58 in FY2025; up 104 since FY2020.
100	Deangelo Marine Exhaust, Inc. Top agencies DHS (Department of Homeland Security)	$71,284	<0.1%	Rank history: #77 in FY2022, #58 in FY2023, #81 in FY2024 and not on the FY2025 list; up 1 since FY2020.

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100 of 278 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $598 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC 2815 contractors in FY2021?

1. Rolls-Royce Military Aero Engines Ltd ($388M), 2. Oshkosh Corp ($54.2M), 3. Cummins Inc. ($43.1M), 4. Fairbanks Morse LLC ($17.5M), 5. Am General LLC ($12.4M), 6. Caterpillar Inc. ($11.9M), 7. EOS Inc. ($7.11M), 8. Jgils, LLC ($5.8M), 9. Pioneer Industries, LLC ($5.35M), 10. Bollinger Shipyards Inc ($5.17M).

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