| AArcola | Arcola | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ACAstronics Chicago | Chicago | IL | Transportation Equipment Manufacturing336411 | 1-19 | ◐ LIKELY ACTIVE |
| ALAstronics Lake Zurich | Lake Zurich | IL | Transportation Equipment Manufacturing336411 | 20-99 | ◐ LIKELY ACTIVE |
| AAAvio Aero Chicago IL | Bedford Park | IL | Transportation Equipment Manufacturing336413 | 100-499 | ◐ LIKELY ACTIVE |
| BDBorgWarner Dixon LLC | Dixon | IL | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| BPBrake Parts Inc. R & D | Mchenry | IL | Transportation Equipment Manufacturing336340 | 20-99 | ◐ LIKELY ACTIVE |
| BNBurgess Norton - Piston Pin Geneva | Geneva | IL | Transportation Equipment Manufacturing336310 | 100-499 | ◐ LIKELY ACTIVE |
| CICentral Illinois Manufacturing Co, Cim-Tek Filtration | Bement | IL | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| CChicago | Forest Park | IL | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| CAChicago Asmby | Chicago | IL | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |
| COChicago - Oakbrook VM | Oak Brook | IL | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| CSChicago Stmp | Chicago Heights | IL | Transportation Equipment Manufacturing336370 | 500+ | ◐ LIKELY ACTIVE |
| CICIF Industries, Inc.-Staunton | Litchfield | IL | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| CMCorrigan Moving Systems | Hanover Park | IL | Transportation Equipment Manufacturing336212 | 1-19 | ◐ LIKELY ACTIVE |
| DEDac Engineered Products, LLC | Oswego | IL | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| DIDakkota Intergrated Sytems LLC | Chicago | IL | Transportation Equipment Manufacturing336111 | 100-499 | ◐ LIKELY ACTIVE |
| DIDana Incorporated | Lisle | IL | Transportation Equipment Manufacturing336350 | 1-19 | ◐ LIKELY ACTIVE |
| DIDanvers IL Trackwork | Danvers | IL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| DMDynamic Manufacturing, Inc. | Melrose Park | IL | Transportation Equipment Manufacturing336350 | 20-99 | ◐ LIKELY ACTIVE |
| EFEagle Fabrication, LLC | Sauget | IL | Transportation Equipment Manufacturing336611 | 1-19 | ◐ LIKELY ACTIVE |
Eclipse Aerospace Inc ARR | Sugar Grove | IL | Transportation Equipment Manufacturing336411 | 1-19 | ◐ LIKELY ACTIVE |
| EIElc Industries CORP. | Aurora | IL | Transportation Equipment Manufacturing336320 | — | ◐ LIKELY ACTIVE |
| FMFargo Manufacturing CO | Franklin Park | IL | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| FNFlex N Gate Effingham | Effingham | IL | Transportation Equipment Manufacturing336390 | 500+ | ◐ LIKELY ACTIVE |
| FNFlex N Gate Plastics Danville | Danville | IL | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| FRFlex-N-Gate Rantoul LLC | Rantoul | IL | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| GRGalesburg Recycling | Galesburg | IL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| GGGlobal Gear & Machining, LLC | Downer Grove | IL | Transportation Equipment Manufacturing336350 | 20-99 | ◐ LIKELY ACTIVE |
| HMHeadly Manufacturing Co. | Broadview | IL | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| HAHeligear Acquisition CO. | Chicago | IL | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
Henderson Products - Upfit Service Center Huntley | Huntley | IL | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| H1Hillside 1 | Hillside | IL | Transportation Equipment Manufacturing336350 | 500+ | ◐ LIKELY ACTIVE |
| H3Hillside 3 | Hillside | IL | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| IAIllinois Auto Electric Co. (IAEPP) | Naperville | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| I9Impex 9 INC | Naperville | IL | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| IBIMS Buhrke-Olson | Arlington Heights | IL | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| IAITW Automotive Body and Fuel NA, Frankfort, IL | Frankfort | IL | Transportation Equipment Manufacturing336360 | 20-99 | ◐ LIKELY ACTIVE |
| ISITW Smart Components NA, Mokena | Mokena | IL | Transportation Equipment Manufacturing336360 | 100-499 | ◐ LIKELY ACTIVE |
| JHJasmine Hunter | Normal | IL | Transportation Equipment Manufacturing336310 | — | ◐ LIKELY ACTIVE |
| JKJeffrey Kerley | Herrin | IL | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| JEJulian Electric Inc. | Lockport | IL | Transportation Equipment Manufacturing336320 | 100-499 | ◐ LIKELY ACTIVE |
| KAKay and Associates, INC. | Buffalo Grove | IL | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| KEKnapheide Equipment CO - Chicago | Mchenry | IL | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| KEKnapheide Equipment Company - N. 5th St Installation Center | Quincy | IL | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| KMKnapheide Manufacturing Training Facility | Quincy | IL | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| LILaGrange IL Engine Plant EMD | La Grange | IL | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| L1Lci - 172a | Chicago | IL | Transportation Equipment Manufacturing336360 | 500+ | ◐ LIKELY ACTIVE |
| MJMeridian Jetpack INC | Chicago | IL | Transportation Equipment Manufacturing336411 | — | ▲ REPORTED CLOSED |
| MLMetform, L.l.c | Savanna | IL | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| MLMetform LLC Hotform | Savanna | IL | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |