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 with 60% of ISPOL's capital 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.