Mishimoto has developed a performance low-temp racing thermostat for the BMW M52, M54, and M56 engines. This Mishimoto racing thermostat is ideal for modified engines that demand more from their cooling systems. Our thermostat begins opening 48°F (27°C) earlier than the stock thermostat to allow coolant to flow into your radiator and begin shedding heat sooner. This thermostat comes pre-installed in a durable OEM-quality housing and fits many BMWs including E46, E39, and E85 chassis. Like all Mishimoto performance products, this BMW M52, M54, and M56 thermostat is backed by our Mishimoto Lifetime Warranty.

This Part Fits:

Year	Make	Model	Submodel
2000	BMW	323Ci	Base
1999-2000	BMW	323i	Base
1999	BMW	323is	Base
2001-2006	BMW	325Ci	Base
2001-2005	BMW	325i	Base
2001-2005	BMW	325xi	Base
2000	BMW	328Ci	Base
1999-2000	BMW	328i	Base
1999	BMW	328is	Base
2001-2006	BMW	330Ci	Base
2001-2005	BMW	330i	Base
2001-2005	BMW	330xi	Base
2001-2005	BMW	525i	Base
1999-2000	BMW	528i	Base
2001-2005	BMW	530i	Base
2004-2005	BMW	X3	2.5i
2004-2006	BMW	X3	3.0i
2001-2006	BMW	X5	3.0i
2001-2006	BMW	X5	4.4i
2002-2003	BMW	X5	4.6is
2004-2006	BMW	X5	4.8is
1999-2002	BMW	Z3	Coupe
1999-2002	BMW	Z3	M Coupe
1999-2002	BMW	Z3	M Roadster
1999-2002	BMW	Z3	Roadster
2003-2005	BMW	Z4	2.5i
2003-2005	BMW	Z4	3.0i
2006	BMW	Z4	Coupe 3.0si
2006	BMW	Z4	M Coupe
2006	BMW	Z4	M Roadster
2006	BMW	Z4	Roadster 3.0i
2006	BMW	Z4	Roadster 3.0si