Top 100 Contractors in NAICS 3363: Motor Vehicle Parts Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 3363: Motor Vehicle Parts Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 66% of FY2021 NAICS 3363 contract dollars

Contract obligations: $811,936,901 Net of deobligations, by contracts coded NAICS 3363 or a code under it
Contractors: 1,355 Parent companies with an obligation
Largest contractor: Rolls-Royce Military Aero Engines Ltd $388 million, 46.0% 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 2 awardees, including Rolls-Royce Solutions America Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$388,026,887	46.0%	Rank history: not on the FY2022–FY2025 lists; up 56 since FY2020.
2	L3Harris Technologies, Inc. 7 awardees, including Renk America LLC, Fisica Applied Technologies, Inc. and CAE USA Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$66,467,630	7.9%	Rank history: #1 in FY2022, #2 in FY2023, not on the FY2024 list and #7 in FY2025; down 1 since FY2020.
3	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$34,717,318	4.1%	Rank history: #3 in FY2022, #3 in FY2023, #4 in FY2024 and #6 in FY2025; up 1 since FY2020.
4	Am General LLC 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$15,332,701	1.8%	Rank history: #2 in FY2022, #5 in FY2023, #7 in FY2024 and #5 in FY2025; new, not ranked in FY2020.
5	Honeywell International Inc. 6 awardees, including Grimes Aerospace Company Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$13,639,344	1.6%	Rank history: #4 in FY2022, #4 in FY2023, #2 in FY2024 and #4 in FY2025; unchanged since FY2020.
6	Government of Canada Through Canadian Commercial Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,893,617	0.9%	Rank history: not on the FY2022 list, #21 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
7	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$7,391,113	0.9%	Rank history: #7 in FY2022, #9 in FY2023, #13 in FY2024 and #11 in FY2025; up 2 since FY2020.
8	GTA Containers, Inc. Top agencies DLA (Defense Logistics Agency)	$7,306,859	0.9%	Rank history: #8 in FY2022, #7 in FY2023, #6 in FY2024 and #27 in FY2025; up 2 since FY2020.
9	Caterpillar Inc. 2 awardees Top agencies Army (Department of the Army)	$6,343,275	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
10	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$6,288,682	0.7%	Rank history: #11 in FY2022, #16 in FY2023, #16 in FY2024 and #16 in FY2025; up 1 since FY2020.
11	Glemco LLC Top agencies Army (Department of the Army)	$6,133,060	0.7%	Rank history: #26 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
12	Ibis TEK Inc. 2 awardees, including Xper, Inc. and Standard Bent Glass LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$5,915,624	0.7%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
13	Twin Disc, Incorporated Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$5,384,884	0.6%	Rank history: #59 in FY2022, #51 in FY2023, #3 in FY2024 and not on the FY2025 list; up 134 since FY2020.
14	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$5,046,140	0.6%	Rank history: #6 in FY2022, #12 in FY2023, #74 in FY2024 and not on the FY2025 list; up 10 since FY2020.
15	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$4,740,066	0.6%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
16	Ussc Acquisition Corp Top agencies Army (Department of the Army)	$4,090,628	0.5%	Rank history: not on the FY2022 list, #38 in FY2023 and not on the FY2024–FY2025 lists; up 123 since FY2020.
17	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,891,902	0.5%	Rank history: #9 in FY2022, #8 in FY2023, #8 in FY2024 and #8 in FY2025; up 6 since FY2020.
18	Cavanaugh Government Group, LLC Top agencies DLA (Defense Logistics Agency)	$3,401,030	0.4%	Rank history: #28 in FY2022, #19 in FY2023, #41 in FY2024 and #87 in FY2025; up 1 since FY2020.
19	Transdigm Group Incorporated 12 awardees, including Korry Electronics Co, Airborne Systems North America of CA Inc. and Amsafe, Inc. Top agencies DLA (Defense Logistics Agency)	$3,335,420	0.4%	Rank history: #25 in FY2022, #43 in FY2023, #44 in FY2024 and not on the FY2025 list; up 10 since FY2020.
20	VSE Corporation 2 awardees, including Wheeler Fleet Solutions, Co. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$3,198,388	0.4%	Rank history: #49 in FY2022, #89 in FY2023, #68 in FY2024 and not on the FY2025 list; up 10 since FY2020.
21	Houston Drive Train Vehicle Component Sales, Inc. Top agencies DLA (Defense Logistics Agency)	$3,165,911	0.4%	Rank history: #15 in FY2022, #22 in FY2023, #30 in FY2024 and #48 in FY2025; up 10 since FY2020.
22	Direct Line, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$3,151,420	0.4%	Rank history: #18 in FY2022, #18 in FY2023, #25 in FY2024 and #20 in FY2025; up 14 since FY2020.
23	QPI Pro, Inc. Top agencies DLA (Defense Logistics Agency)	$3,014,070	0.4%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; up 174 since FY2020.
24	New Mexico Emergency Products LLC Top agencies DOI (Department of the Interior)	$2,793,090	0.3%	Rank history: #48 in FY2022, #60 in FY2023, #26 in FY2024 and not on the FY2025 list; up 32 since FY2020.
25	BAE Systems PLC 5 awardees, including BAE Systems Land & Armaments L.P. and BAE Systems Information & Electronic Systems Integration Inc. Top agencies DLA (Defense Logistics Agency)	$2,766,922	0.3%	Rank history: #23 in FY2022, #20 in FY2023, #40 in FY2024 and #57 in FY2025; up 1 since FY2020.
26	Autopartspros, LLC Top agencies Navy (Department of the Navy)	$2,661,469	0.3%	Rank history: #31 in FY2022, #28 in FY2023, #36 in FY2024 and #39 in FY2025; down 4 since FY2020.
27	Washington Foundries Inc. Top agencies DLA (Defense Logistics Agency)	$2,437,026	0.3%	Rank history: #17 in FY2022, #26 in FY2023, #42 in FY2024 and #24 in FY2025; up 44 since FY2020.
28	Prestolite Electric Incorporated Top agencies DLA (Defense Logistics Agency)	$2,417,407	0.3%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
29	Longhorn Regional Service Center, LLC Top agencies DLA (Defense Logistics Agency)	$2,217,767	0.3%	Rank history: #21 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
30	Underground Pipeline Inc. Top agencies DLA (Defense Logistics Agency)	$2,171,857	0.3%	Rank history: not on the FY2022–FY2023 lists, #17 in FY2024 and not on the FY2025 list; up 139 since FY2020.
31	C E Niehoff & Co Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$2,142,683	0.3%	Rank history: #5 in FY2022, #6 in FY2023, #5 in FY2024 and #15 in FY2025; down 16 since FY2020.
32	Melton Sales & Service Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,134,929	0.3%	Rank history: #10 in FY2022, #34 in FY2023, #34 in FY2024 and #61 in FY2025; down 14 since FY2020.
33	Sargent Aerospace & Defense LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,116,388	0.3%	Rank history: not on the FY2022–FY2025 lists; up 180 since FY2020.
34	LOC Performance Products LLC Top agencies DLA (Defense Logistics Agency)	$2,107,835	0.2%	Rank history: #14 in FY2022, #11 in FY2023, #10 in FY2024 and #3 in FY2025; down 26 since FY2020.
35	General Dynamics Corporation 6 awardees, including General Dynamics Land Systems - Canada Corporation, General Dynamics Land Systems Inc. and Electric Boat Corporation Top agencies DLA (Defense Logistics Agency)	$2,102,435	0.2%	Rank history: #19 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
36	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$2,042,486	0.2%	Rank history: #29 in FY2022, #32 in FY2023, #55 in FY2024 and #76 in FY2025; down 19 since FY2020.
37	Uusi, LLC Top agencies DLA (Defense Logistics Agency)	$2,029,289	0.2%	Rank history: not on the FY2022 list, #46 in FY2023, not on the FY2024 list and #25 in FY2025; up 12 since FY2020.
38	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$1,993,448	0.2%	Rank history: #41 in FY2022, #39 in FY2023, #48 in FY2024 and #35 in FY2025; up 25 since FY2020.
39	Ricardo PLC 2 awardees, including Detroit Defense, Inc. and Detroit Defense Systems, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,983,452	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Israel Aerospace Industries Military Aircraft Division, Golan Industries Top agencies DLA (Defense Logistics Agency)	$1,912,300	0.2%	Rank history: #37 in FY2022, #48 in FY2023, #63 in FY2024 and #52 in FY2025; unchanged since FY2020.
41	EOS Inc. 2 awardees, including Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,848,345	0.2%	Rank history: not on the FY2022 list, #81 in FY2023, #87 in FY2024 and not on the FY2025 list; down 4 since FY2020.
42	U.s. Hardware Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$1,848,064	0.2%	Rank history: #20 in FY2022, #10 in FY2023, #15 in FY2024 and #10 in FY2025; down 21 since FY2020.
43	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$1,830,699	0.2%	Rank history: #32 in FY2022, #42 in FY2023, #37 in FY2024 and #60 in FY2025; up 9 since FY2020.
44	Tecmotiv Corporation Through Tecmotiv (Usa), Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,801,631	0.2%	Rank history: #12 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; down 32 since FY2020.
45	Napa Sierra Top agencies Army (Department of the Army)	$1,790,333	0.2%	Rank history: #43 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
46	G.s.e. Dynamics, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,768,866	0.2%	Rank history: not on the FY2022–FY2025 lists; up 48 since FY2020.
47	Soderberg Manufacturing Company, Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,743,465	0.2%	Rank history: #50 in FY2022, #59 in FY2023, #76 in FY2024 and #94 in FY2025; up 48 since FY2020.
48	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$1,615,366	0.2%	Rank history: #27 in FY2022, #68 in FY2023, #39 in FY2024 and #73 in FY2025; down 7 since FY2020.
49	Control Products Corporation Top agencies DLA (Defense Logistics Agency)	$1,559,725	0.2%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
50	Graham Corp 2 awardees, including Barber-Nichols, LLC Top agencies Navy (Department of the Navy)	$1,540,507	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Genuine Parts Company 3 awardees, including Motion Industries, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,513,873	0.2%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; up 42 since FY2020.
52	Wilwood Engineering Top agencies DLA (Defense Logistics Agency)	$1,491,264	0.2%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
53	Heico Aerospace Corporat 3 awardees, including Seal Dynamics LLC and Thermal Structures, Inc. Top agencies DLA (Defense Logistics Agency)	$1,460,522	0.2%	Rank history: #81 in FY2022, #82 in FY2023, #23 in FY2024 and #17 in FY2025; up 105 since FY2020.
54	ECI Defense Group, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,437,322	0.2%	Rank history: #53 in FY2022, #31 in FY2023, #28 in FY2024 and #59 in FY2025; up 96 since FY2020.
55	Worldwide Equipment Enterprises Inc. Through Worldwide Equipment Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,412,641	0.2%	Rank history: #39 in FY2022, #15 in FY2023, #52 in FY2024 and not on the FY2025 list; up 76 since FY2020.
56	SAFRAN 5 awardees, including Safran Power USA LLC and Safran Electrical Components Canada Inc. Top agencies DLA (Defense Logistics Agency)	$1,355,849	0.2%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.
57	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$1,338,546	0.2%	Rank history: #45 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
58	Bpr-Rico Equipment, Inc. Top agencies DLA (Defense Logistics Agency)	$1,307,237	0.2%	Rank history: #69 in FY2022, not on the FY2023 list, #90 in FY2024 and not on the FY2025 list; unchanged since FY2020.
59	Training, Rehabilitation, & Development Institute, Inc. Top agencies Navy (Department of the Navy)	$1,260,270	0.1%	Rank history: #36 in FY2022, #61 in FY2023, #60 in FY2024 and #92 in FY2025; up 5 since FY2020.
60	Titan International, Inc. Through Titan Wheel Corporation of Illinois Top agencies Army (Department of the Army)	$1,256,160	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Holman Enterprises, Inc. Through Holman Parts Distribution, Inc. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$1,213,885	0.1%	Rank history: not on the FY2022 list, #66 in FY2023 and not on the FY2024–FY2025 lists; up 171 since FY2020.
62	Saint-Gobain Corporation (1) Through Luxium Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$1,210,672	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	S I T Corporation Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,196,912	0.1%	Rank history: #93 in FY2022, #74 in FY2023, #86 in FY2024 and not on the FY2025 list; down 28 since FY2020.
64	CME Arma, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,196,468	0.1%	Rank history: not on the FY2022–FY2024 lists and #65 in FY2025; up 211 since FY2020.
65	U.s. Pioneer, L.L.C. Top agencies DLA (Defense Logistics Agency)	$1,185,043	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 59 since FY2020.
66	Lanzen, Incorporated Top agencies DLA (Defense Logistics Agency)	$1,135,656	0.1%	Rank history: not on the FY2022 list, #54 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
67	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$1,116,195	0.1%	Rank history: #84 in FY2022, #79 in FY2023, #47 in FY2024 and #33 in FY2025; up 15 since FY2020.
68	T & M Distributors, Inc. Top agencies Navy (Department of the Navy)	$1,111,142	0.1%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
69	Statz Corp Top agencies DLA (Defense Logistics Agency)	$1,106,615	0.1%	Rank history: #62 in FY2022, #44 in FY2023, #38 in FY2024 and #83 in FY2025; down 35 since FY2020.
70	GMS International Corporation Top agencies DLA (Defense Logistics Agency)	$1,089,354	0.1%	Rank history: #55 in FY2022, #50 in FY2023, #62 in FY2024 and #42 in FY2025; up 27 since FY2020.
71	Badger Truck and Automotive Group, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,065,702	0.1%	Rank history: #42 in FY2022, #52 in FY2023, not on the FY2024 list and #51 in FY2025; down 2 since FY2020.
72	RTX Corporation 8 awardees, including Goodrich Lighting Systems Inc., Rosemount Aerospace Inc. and Kidde Technologies Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,037,674	0.1%	Rank history: not on the FY2022 list, #77 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2020.
73	Choctaw Nation of Oklahoma 2 awardees, including Choctaw Defense Manufacturing LLC and Choctaw Manufacturing Defense Contractors, Inc. Top agencies DLA (Defense Logistics Agency)	$1,029,463	0.1%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
74	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency)	$1,007,899	0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
75	Essex Industries Inc. 3 awardees Top agencies DLA (Defense Logistics Agency)	$1,004,445	0.1%	Rank history: not on the FY2022–FY2025 lists; up 278 since FY2020.
76	Sun Display Systems LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$999,953	0.1%	Rank history: not on the FY2022–FY2024 lists and #97 in FY2025; up 44 since FY2020.
77	P55 Limited Top agencies DLA (Defense Logistics Agency)	$980,616	0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
78	Lawrence Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$971,073	0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
79	Schutt Industries of Clintonville, Wis., Inc. Top agencies DLA (Defense Logistics Agency)	$953,379	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 244 since FY2020.
80	ELC Industries Corp. Top agencies DLA (Defense Logistics Agency)	$953,111	0.1%	Rank history: not on the FY2022 list, #97 in FY2023 and not on the FY2024–FY2025 lists; up 39 since FY2020.
81	Greene Metal Products, Inc. Top agencies DLA (Defense Logistics Agency)	$947,904	0.1%	Rank history: #68 in FY2022, not on the FY2023 list, #77 in FY2024 and #84 in FY2025; up 25 since FY2020.
82	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$927,176	0.1%	Rank history: #66 in FY2022, not on the FY2023 list, #27 in FY2024 and #32 in FY2025; up 79 since FY2020.
83	Southern Automotive Wholesalers, Inc. Top agencies DLA (Defense Logistics Agency)	$919,958	0.1%	Rank history: #24 in FY2022, #75 in FY2023, #82 in FY2024 and #23 in FY2025; up 27 since FY2020.
84	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$904,444	0.1%	Rank history: #51 in FY2022, #90 in FY2023 and not on the FY2024–FY2025 lists; up 277 since FY2020.
85	Big Changes, LLC Top agencies DLA (Defense Logistics Agency)	$899,040	0.1%	Rank history: not on the FY2022–FY2025 lists; up 88 since FY2020.
86	Dion International Trucks, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$884,078	0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
87	Parts Life Inc. Through Deval Life Cycle Support LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$876,550	0.1%	Rank history: not on the FY2022–FY2025 lists; up 208 since FY2020.
88	Clarke Power Services, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$858,896	0.1%	Rank history: #47 in FY2022, #29 in FY2023, #35 in FY2024 and #2 in FY2025; down 45 since FY2020.
89	Beta Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$854,434	0.1%	Rank history: not on the FY2022–FY2025 lists; up 199 since FY2020.
90	Fincantieri Marine Systems North America Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$853,754	0.1%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 82 since FY2020.
91	Aarcorp Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$852,655	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Dynalec Corporation Top agencies DLA (Defense Logistics Agency)	$851,653	0.1%	Rank history: #16 in FY2022, #33 in FY2023, #70 in FY2024 and not on the FY2025 list; up 162 since FY2020.
93	Bukkehave Corporation A / S Through Bukkehave, Inc. Top agencies Army (Department of the Army) DOS (Department of State)	$843,435	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	American Aluminum Accessories Inc. Top agencies DOJ (Department of Justice)	$841,748	0.1%	Rank history: #74 in FY2022, #47 in FY2023, not on the FY2024 list and #77 in FY2025; new, not ranked in FY2020.
95	911 Circuits LLC Top agencies DOJ (Department of Justice)	$823,925	0.1%	Rank history: not on the FY2022–FY2024 lists and #88 in FY2025; new, not ranked in FY2020.
96	Pines Quality Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Army (Department of the Army)	$822,556	0.1%	Rank history: #35 in FY2022, #78 in FY2023, #33 in FY2024 and #80 in FY2025; up 239 since FY2020.
97	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$818,477	0.1%	Rank history: not on the FY2022 list, #56 in FY2023 and not on the FY2024–FY2025 lists; down 36 since FY2020.
98	MTP Drivetrain Services L.L.C. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$802,617	0.1%	Rank history: #64 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2020.
99	PDI Ground Support Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$798,093	0.1%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
100	Ronal Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$786,559	0.1%	Rank history: not on the FY2022 list, #92 in FY2023, not on the FY2024 list and #78 in FY2025; down 54 since FY2020.

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100 of 1,355 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 3363

Code	Net obligations	Largest contractor
33639 Other Motor Vehicle Parts Manufacturing	$533,296,702	Rolls-Royce Military Aero Engines Ltd
33635 Motor Vehicle Transmission and Power Train Parts Manufacturing	$108,348,579	L3Harris Technologies, Inc.
33632 Motor Vehicle Electrical and Electronic Equipment Manufacturing	$67,987,283	Government of Canada
33631 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing	$40,598,948	Caterpillar Inc.
33636 Motor Vehicle Seating and Interior Trim Manufacturing	$26,836,231	Ussc Acquisition Corp
33633 Motor Vehicle Steering and Suspension Components (except Spring) Manufacturing	$17,153,966	Oshkosh Corp
33634 Motor Vehicle Brake System Manufacturing	$13,433,751	Ricardo PLC
33637 Motor Vehicle Metal Stamping	$4,281,441	Am General LLC

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 $843 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 NAICS 3363 contractors in FY2021?

1. Rolls-Royce Military Aero Engines Ltd ($388M), 2. L3Harris Technologies, Inc. ($66.5M), 3. Oshkosh Corp ($34.7M), 4. Am General LLC ($15.3M), 5. Honeywell International Inc. ($13.6M), 6. Government of Canada ($7.89M), 7. Ruta Supplies Inc. ($7.39M), 8. GTA Containers, Inc. ($7.31M), 9. Caterpillar Inc. ($6.34M), 10. Kampi Components Co Inc. ($6.29M).

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