| LML & M Radiator, INC. | Yankton | SD | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
Trail-eze INC. | Mitchell | SD | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
Trail King Industries, INC | Mitchell | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| WTWilson Trailer Company | Lennox | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| BFBaldwin Filters INC. | Yankton | SD | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| HTHendrickson Trailer Suspension Systems | Mitchell | SD | Transportation Equipment Manufacturing336330 | — | ◐ LIKELY ACTIVE |
| HIHorton Industries, INC. - West | Britton | SD | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| TLTerex Load King Div | Elk Point | SD | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| TKTrail King Inds INC | Mitchell | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| WTWilson Trailer Company | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| AMAviation Manufacturing Group, LLC DBA The Freeman Company | Yankton | SD | Transportation Equipment Manufacturing336413 | 20-99 | ◐ LIKELY ACTIVE |
| MRMidwest Railcar Repair INC | Brandon | SD | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| TITrail-eze INC | Corsica | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| WTWilson Trailer Yankton | Yankton | SD | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
Dakota Bodies, LLC | Watertown | SD | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| DMDakota Mfg CO INC | Platte | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| DMDakota Mfg CO INC | Corsica | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| TITrail-eze INC. | Platte | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
AFCO Performance Group dba Legend Suspensions | Sturgis | SD | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| ADAmerican Defense Builders Trust | Hot Springs | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| CTCustom Truck One Source - Elk Point | Elk Point | SD | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| FYFiltration Yankton | Yankton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| HIHorton, Inc Britton | Britton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MAMatthew a Ramsey | Ellsworth Afb | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| MMMatthew Moranor | Hot Springs | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin | Yankton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| SLSentry LLC Watertown | Watertown | SD | Transportation Equipment Manufacturing336214 | 100-499 | ◐ LIKELY ACTIVE |
| SBSpartan - Brandon | Brandon | SD | Transportation Equipment Manufacturing336120 | 100-499 | ◐ LIKELY ACTIVE |
| SFSpartan Fire, LLC | Brandon | SD | Transportation Equipment Manufacturing336120 | — | ◐ LIKELY ACTIVE |
| SSSRAM - Spearfish | Spearfish | SD | Transportation Equipment Manufacturing336991 | 20-99 | ◐ LIKELY ACTIVE |
| TCTRAIL-EZE Corsica | Corsica | SD | Transportation Equipment Manufacturing336212 | 1-19 | ◐ LIKELY ACTIVE |
| TPTRAIL-EZE Platte | Platte | SD | Transportation Equipment Manufacturing336212 | 1-19 | ◐ LIKELY ACTIVE |
| WTWilson Trailer Lennox | Lennox | SD | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| ZIZendeavor Interplanetary, LLC | Owanka | SD | Transportation Equipment Manufacturing336414 | — | ◐ LIKELY ACTIVE |
| ADAirborne Dynamic Systems, LLC | Midland | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| PSPonderosa Services, INC | Mitchell | SD | Transportation Equipment Manufacturing336999 | — | ◐ LIKELY ACTIVE |