Bismark Automatic Transmission Service has been serving the city of Maywood, California, for over 40 years. Established in 1964 by founder Eleazar Contreras, and armed with little but the goal of offering service with personal integrity and quality parts, we quickly became the only transmission specialist in the area, forming a large and loyal following. Many of our original patrons are still our best customers, and we now serve their grandchildren and great grandchildren.