Corporate Head Office
| Corporate Head Office | Gyoda, Saitama |
Manufacturing Facilities
| Saitama Plant | Gyoda, Saitama | Shock absorbers for automobiles |
| Saitama No.2 Plant | Gyoda, Saitama | Power Tilt and Trim Units for Outboard Engines |
| Hadano Plant | Hadano, Kanagawa | Differential gears for automobile and motorcycles |
| Gotemba No.1 Plant | Gotemba, Shizuoka | Power steering system, Electric |
| Gotemba No.2 Plant | Gotemba, Shizuoka | Power steering system, Hydraulic |
| Asaba Plant | Fukuroi, Shizuoka | Shock absorbers for motorcycles |
| Nagoya Plant | Kasugai, Aichi | Shock absorbers for motorcycles Propeller shafts for automobiles, gas spring |
Sales Office
| Osaka Sales Office | Ikeda, Osaka | Sales |
Research & Development Facilities
| R&D Automotive Parts (Tochigi) | Tochigi | R&D |
| R&D Automotive Parts (Saitama) | Gyoda, Saitama | R&D |
| R&D Motorcycle Parts | Fukuroi, Shizuoka | R&D |
Domestic Subsidiaries and Affiliates
| SHOWA KYUSHU CORPORATION* | Kumamoto | Shock absorbers for automobiles Sintered Parts (Sintering) |
| SHOWA SEIKO CO.,LTD. * |
Hadano, Kanagawa | Automobile Parts |
| Honda Cars SAITAMAKITA | Kumagaya, Saitama | Automotive sales, service, and insurance |
*Asterisk indicates consolidated subsidiary.