GM Powertrain Poland (formerly Isuzu Motors Polska Sp. z o.o. or ISPOL) is an automobile engine manufacturer in Poland. It was opened in 1996 by Isuzu as an alternate production site for the Circle L engine, also produced in the United States at the DMAX joint venture. However, Isuzu's financial troubles caused General Motors to take control in 2002. Since then the plant manufactured over two million engines for Opel/Vauxhall. The engines are for various Opel/Vauxhall models.
In 2013, General Motors and Isuzu Motors Polska Sp. Z o.o. (ISPOL) signed an agreement to purchase the remaining 40% shares of the Tychy plant from Isuzu.