| COCity of San Luis Obispo Fire Dept. - Station #1 | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| COCity of San Luis Obispo, Police Dept. | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| COCity of York Emergency Engines | York | NE | — | ◇ UNVERIFIED |
| CMCkc Motosports L.l.c. | Ortonville | MI | — | ◇ UNVERIFIED |
| CIClark International Logistics LLC | Poca | WV | — | ◇ UNVERIFIED |
| CCClassic Clnrs Mechanicburg | Mechanicsburg | PA | — | ◇ UNVERIFIED |
| CEClassic Exhaust Systems LLC | Geneva | OH | — | ◇ UNVERIFIED |
| CClearmotion | Wilmington | MA | — | ◇ UNVERIFIED |
| CBCleveland Bros Equip CO Inc/engine Rebuild Fac | Ebensburg | PA | — | ◇ UNVERIFIED |
| CACnc Aztec Precision Machining INC. | San Diego | CA | — | ◇ UNVERIFIED |
| CSCoastal Surgical Specialists, INC. | Pismo Beach | CA | — | ◇ UNVERIFIED |
| C5Code 504,llc | Seward | NE | — | ◇ UNVERIFIED |
| CMCognito Motorsports, LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CCCoherent CORP | Temecula | CA | — | ◇ UNVERIFIED |
| CACollins & Aikman | Rantoul | IL | — | ◇ UNVERIFIED |
| CACollins & Aikman | Athens | TN | — | ◇ UNVERIFIED |
| CACollins & Aikman CO | Port Huron | MI | — | ◇ UNVERIFIED |
| CACollins & Aikman CORP | Rantoul | IL | — | ◇ UNVERIFIED |
| CACollins & Aikman CORP | Rantoul | IL | — | ◇ UNVERIFIED |
| CCColorshine Collision Center LLC | Pacoima | CA | — | ◇ UNVERIFIED |
| CMColumbus Midrange Engine Plant | Columbus | IN | — | ◇ UNVERIFIED |
| CICommander Innovations, Inc. | Holly | MI | — | ◇ UNVERIFIED |
| CCComplete Custom Wheel, INC. | Holly Hill | FL | — | ◇ UNVERIFIED |
| CEComposite Engineering LLC (1413010484) | Amelia | OH | — | ◇ UNVERIFIED |
| CTCom Tac Unlimited, INC. | Augusta | GA | — | ◇ UNVERIFIED |
| CWConatser Welding and Machine, LLC | King City | CA | — | ◇ UNVERIFIED |
| CMConcentris Manufacturing Solutions, INC. | Westborough | MA | — | ◇ UNVERIFIED |
| CECone Engineering, Inc. | Los Alamitos | CA | — | ◇ UNVERIFIED |
| CAConfer Automotive | Ben Lomond | CA | — | ◇ UNVERIFIED |
| CPConley Precision Engines INC | Glen Ellyn | IL | — | ◇ UNVERIFIED |
| CDConsolidated Diesel Company | Whitakers | NC | — | ◇ UNVERIFIED |
| CRConstructors Racing Group, LLC | San Francisco | CA | — | ◇ UNVERIFIED |
| CContinental | Newport News | VA | — | ◇ UNVERIFIED |
| CMContinental Mfg. Company, INC. | Houston | TX | — | ◇ UNVERIFIED |
| CECooper Energy Services | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| CACooper-standard Automotive of Fairview | Fairview | MI | — | ◇ UNVERIFIED |
| CACopeland Auto Supply, INC | Oak Ridge | TN | — | ◇ UNVERIFIED |
| CLCorral-130 LLC | Compton | CA | — | ◇ UNVERIFIED |
| CVCorsa Velocita Group LLC. | North Hollywood | CA | — | ◇ UNVERIFIED |
| CWCosmo Wheels INC | Winchester | KY | — | ◇ UNVERIFIED |
| COCounty of San Luis Obispo - Airport | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| COCounty of San Luis Obispo Itd | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| COCounty of San Luis Obispo - Jail West Facility | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| COCounty of San Luis Obispo - Oceano Airport | Oceano | CA | — | ◇ UNVERIFIED |
| CBCourtyard By Marriott | Paso Robles | CA | — | ◇ UNVERIFIED |
 Cpk Manufacturing INC | San Jose | CA | — | ◇ UNVERIFIED |
| CSCrankshaft Supply CO INC. | Minneapolis | MN | — | ◇ UNVERIFIED |
| CFCrescent Forge & Shovel Co-div of Eric | Havana | IL | — | ◇ UNVERIFIED |
| CLCromCo, LLC | Cypress | CA | — | ◇ UNVERIFIED |
| CECrower Engineering & Sales CO INC | San Diego | CA | — | ◇ UNVERIFIED |
| CSC & S Commercial Truck and Van Equipment | Palatka | FL | — | ◇ UNVERIFIED |
| CACtw Automation, INC. | Lexington | NC | — | ◇ UNVERIFIED |
| CCCuesta College (generator) | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| CECummins Electrified Power | Dixon | CA | — | ◇ UNVERIFIED |
| CECummins Electrified Power | West Sacramento | CA | — | ◇ UNVERIFIED |
| CECummins Emission Solutions | Stoughton | WI | — | ◇ UNVERIFIED |
| CECummins Engine CO Midrange Engine Pla | Columbus | IN | — | ◇ UNVERIFIED |
| CFCummins Filtration | Lake Mills | IA | — | ◇ UNVERIFIED |
| CICummins INC | Bloomington | CA | — | ◇ UNVERIFIED |
| CICummins INC | San Leandro | CA | — | ◇ UNVERIFIED |
| CICummins INC. | Memphis | TN | — | ◇ UNVERIFIED |
| CICummins INC. | Whitakers | NC | — | ◇ UNVERIFIED |
| CICummins, INC. | Columbus | IN | — | ◇ UNVERIFIED |
| CICummins INC – Bronx | Bronx | NY | — | ◇ UNVERIFIED |
| CICummins INC Ctc Charleston | Charleston | SC | — | ◇ UNVERIFIED |
| CICummins Incorporated | Columbus | IN | — | ◇ UNVERIFIED |
| CICummins Incorporated | Seymour | IN | — | ◇ UNVERIFIED |
| CICummins Incorporated | Columbus | IN | — | ◇ UNVERIFIED |
| CICummins Incorporated Seymour Engine Pla | Seymour | IN | — | ◇ UNVERIFIED |
| CICummins INC. Seymour Hhp Block Line Facility | Seymour | IN | — | ◇ UNVERIFIED |
| CICummins Inc., Technical Center - Plant | Columbus | IN | — | ◇ UNVERIFIED |
| CICummins Industrial Center | Seymour | IN | — | ◇ UNVERIFIED |
| CSCummins Sales & Service | Morgan City | LA | — | ◇ UNVERIFIED |
| CTCummins Turbo Technologies | Charleston | SC | — | ◇ UNVERIFIED |
| CGCurt Group | Allentown | PA | — | ◇ UNVERIFIED |
| CCCurtiss-wright CORP | Wood Ridge | NJ | — | ◇ UNVERIFIED |
| CCCurvilinear Components LLC | San Clemente | CA | — | ◇ UNVERIFIED |
| CMCustomized Manufacturing and Assembly INC | Rochester Hills | MI | — | ◇ UNVERIFIED |
| CTCustom Tranz INC Dba Valve Body Pro | San Jose | CA | — | ◇ UNVERIFIED |
| CMC&w Manufacturing Dba C&w Machine Shop | Turlock | CA | — | ◇ UNVERIFIED |
| CHCylinder Head Engineering LLC | De Soto | KS | — | ◇ UNVERIFIED |
| DHD.A.C. Holding Ltd. | Brighton | MI | — | ◇ UNVERIFIED |
| DADaewon America, INC. Opelika Plant | Opelika | AL | — | ◇ UNVERIFIED |
| DUDaikyonishikawa U.s.a., INC. | Madison | AL | — | ◇ UNVERIFIED |
| DTDaimler Trucks North America | Detroit | MI | — | ◇ UNVERIFIED |
| DPDalenzie Professionally Built Torque Converters | Oceanside | CA | — | ◇ UNVERIFIED |
| DCDana Corporation | Farmington | MI | — | ◇ UNVERIFIED |
| DCDana Corporation Perfect Circle Division | Franklin | KY | — | ◇ UNVERIFIED |
| DCDana Coupled Prods | Upper Sandusky | OH | — | ◇ UNVERIFIED |
| DTDanfoss Turbocor Compressors, INC | Tallahassee | FL | — | ◇ UNVERIFIED |
| DRDan River Incorporated | Sevierville | TN | — | ◇ UNVERIFIED |
| DADba Advanced Manufacturing Svcs | Torrance | CA | — | ◇ UNVERIFIED |
| DAD'Brot Aerospace, LLC | Lakeland | FL | — | ◇ UNVERIFIED |
| DLDeatschwerks, LLC | Oklahoma City | OK | — | ◇ UNVERIFIED |
| DIDecostar Industries, INC. | Mccalla | AL | — | ◇ UNVERIFIED |
| DMDecuir Manufacturing CORP | Fallbrook | CA | — | ◇ UNVERIFIED |
| DEDee Engineering | Ontario | CA | — | ◇ UNVERIFIED |
| DFDelafield Fluid Technologies | Duarte | CA | — | ◇ UNVERIFIED |
| DLDe La Rosa Manufacturing INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| DADelphi Automotive Systems LLC | Warren | OH | — | ◇ UNVERIFIED |
