 | Volvo Penta | Sweden | |
 | DEUTZ | Germany | |
 | MTU | Germany | |
| AGCO Power | Finland | ||
| Beijing New Metallurgical Machine & Equipment Co.,Ltd(BNMME) | China | ||
| BINA PERTIWI | Indonesia | ||
| Caterpillar Inc | United States | ||
| Conjet AB | Sweden | ||
| Cummins Inc. | United States | ||
| Deutz Corporation | United States | ||
| Dry Systems Technologies | United States | ||
| Ellefson Off Highway | United States | ||
| Europe Tractor Parts srl | Italy | ||
| Expert Diesel S.A. | Panama | ||
| Finnish Radiator mgf.co Ltd | Finland | ||
| FUELACTIVE | United Kingdom | ||
| GFS Corp | United States | ||
| Grady Enterprises Inc | United States | ||
| Heavy Quip Sales Inc. | United States | ||
| Hilliard Corporation | United States | ||
| Hoss Equipment Company | United States | ||
| Impac Systems Engineering | United States | ||
| Independent Rebuild Specialist LLC | United States | ||
| Industrial Diesel | United States | ||
| Interstate McBee | United States | ||
| Intl. Energy Products | United States | ||
| IPD | United States | ||
| IPD Australia Pty Ltd | Australia | ||
| JCB Power Systems Ltd. | United Kingdom | ||
| John Deere Power Systems | United States | ||
| Joseph Industries, Inc. | United States | ||
| Komatsu | United States | ||
| Kraft Power Corporation | United States | ||
| KSD Enterprises | United States | ||
| McDowell Brothers Industries Inc. | Canada | ||
| MTU | United States | ||
| MTU Mongolia | Mongolia | ||
| Prestolite | United States | ||
| Shell Lubricants | United States | ||
| Spectro Scientific | United States | ||
| Subaru Industrial Power Products | United States | ||
| Sumitomo Machinery Corporation of America | United States | ||
| TESCO | United States | ||
| TopFiltration Europe | Netherlands | ||
| Toshiba International Corp. | United States | ||
| Turbo Precleaner | United States | ||
| Vanair Manufacturing Inc | United States | ||
| Wartsila Oy | Finland |
