General Purpose Engine
   - Kawasaki Motors Enterprise (Thailand) Co., Ltd.
   - Thai Engine Manufacturing Public Co., Ltd.
   - Thai Kawasaki Motors Co., Ltd.
   - The Siam Kubota Industry Co., Ltd.
   - Yanmar S.P. Co., Ltd.

   American Automotive Engine
   - AutoAlliance (Thailand) Co., Ltd. (Ford)

   Japanese Automotive Engine
   - AutoAlliance (Thailand) Co., Ltd. (Mazda)
   - Isuzu Engine Manufacturing (Thailand) Co., Ltd.
   - Isuzu Motors (Thailand) Co., Ltd.
   - MMC Sittipol Co., Ltd. (Mitsubishi)
   - MSC Engine Co., Ltd. (Mitsubishi)
   - Siam International Corp. Ltd. (Suzuki)
   - Siam Toyota Manufacturing Co., Ltd.
   - Thai Automotive Industry Co., Ltd. (Nissan)

   Motorcycle Engine
   - Kawasaki Motors Enterprise (Thailand) Co., Ltd.
   - Siam Yamaha Co., Ltd.
   - Thai Kawasaki Motors Co., Ltd.
   - Thai Suzuki Motor Co., Ltd.

 

   Genuine Replacement
   - MMC Sittipol Co., Ltd.
   - Siam Nissan Automobile Co., Ltd.
   - Siam Yamaha Co., Ltd.
   - Thai Hino Motor Sales Ltd.
   - Tri Petch Isuzu Sales Co., Ltd.

   Cherry Brand Replacement
   - The Seri Wathana R.O.P.