| 1 | COMP Cams | | USA |
| 2 | Michigan Motor Exchange | | USA |
| 3 | Motive Parts Co. Inc. | | USA |
| 4 | Equipment & Systems Engineering Inc. | | USA |
| 5 | Endyn Ltd. | | USA |
| 6 | Kriners Racing Engines | | USA |
| 7 | Authentic Scale | | USA |
| 8 | Reher-Morrison Racing Engines | | USA |
| 9 | Opel Engineering | | USA |
| 10 | AB Engine | | USA |
| 11 | Clinton Engines Inc. | | USA |
| 12 | Zabatt Power Systems | | USA |
| 13 | Subaru Industrial Power Products | | USA |
| 14 | Mitsubishi Heavy Industries America Inc. | | USA |
| 15 | Astro Automotive Machine | | USA |
| 16 | United States Motor Power | | USA |
| 17 | Advanced Engines Development Corp. | | USA |
| 18 | C & N Automotive Machine Inc. | | USA |
| 19 | Reliable Engine Services Ltd. | | USA |
| 20 | Baldwin Performance Machine | | USA |
| 21 | Buck's Engine Co. | | USA |
| 22 | Dealer's Mfg. Co. | | USA |
| 23 | Aries Supply & Equipment | | USA |
| 24 | Schedler's Engine Rebuilding & Supply Inc. | | USA |
| 25 | N. Pacific Engine Inc | | USA |
| 26 | Industrial Welder Rebuilders Inc. | | USA |
| 27 | Forbes Rebuilt Automotive Parts | | USA |
| 28 | Zenith Ignition | | USA |
| 29 | Kendrick Automotive Inc. | | USA |
| 30 | Energy Conversion Corp. | | USA |
| 31 | Cottrell Racing Engines | | USA |
| 32 | Waukesha-Pearce Industries Inc. | | USA |
| 33 | Automotive Wholesalers Inc. | | USA |
| 34 | Springfield Remanufacturing | | USA |
| 35 | Governors America Corp. (GAC) | | USA |
| 36 | Generac Power Systems Inc. | | USA |
| 37 | DFW Heavy Duty | | USA |
| 38 | Edelbrock Corp. | | USA |
| 39 | Douglas Autotech | | USA |
| 40 | A/M Air Starter Sales & Service | | USA |
| 41 | MAHLE Group | | USA |
| 42 | Alkota Cleaning Systems Inc. | | USA |
| 43 | American Honda Motor Co. Inc. | | USA |
| 44 | Flag Service & Maintenance Incorporated | | USA |
| 45 | Briggs & Stratton Corp. | | USA |
| 46 | Kawasaki Motors Corp. U.S.A. | | USA |
| 47 | Cummins Inc. | | USA |
| 48 | Fleet Maintenance of Texas | | USA |
| 49 | Honda Engines Group | | USA |
| 50 | Vitesco Technologies | | USA |
| 51 | Tecumseh Products Co. | | USA |
| 52 | Lingenfelter Performance Engineering Inc. | | USA |
| 53 | Standard Aero Holdings Inc | | USA |
| 54 | Volvo Penta Marine Products | | USA |
| 55 | Kubota Engine America Corporation | | USA |
| 56 | DEUTZ AG | | USA |
| 57 | Kwi of Ocala Inc. | | USA |
| 58 | Keith Black Racing Engines | | USA |
| 59 | Workhorse Group Inc. | | USA |
