About Siei

Siei is a renowned Japanese manufacturing company specializing in automotive parts and systems. Established in 1948, the firm has grown to become one of the leading suppliers in the industry, providing a wide array of products including engines, transmissions, suspensions, and electric powertrain components. With a strong focus on innovation and quality, Siei continually pushes the boundaries of automotive technology, ensuring vehicles are safer, more efficient, and environmentally friendly.