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.

• Direct fit for BMW M52, M54, and M56 engines
• Begins opening 48°F (27°C) earlier than stock to let coolant flow through your radiator sooner
• Thermostat pre-installed in OEM-style housing
• Includes thermostat housing gasket
• Mishimoto Lifetime Warranty
• OEM Activation Temp C: 97°C
• OEM Activation Temp F: 206°F
• Install Torque Specs: 7 ft lbs for the four T30 bolts which secure the plastic housing components
• Mishimoto Activation Temp (Fahrenheit): 158°F
• Mishimoto Activation Temp (Celsius): 70°C
• (1) Mishimoto Thermostat w/ Housing and Sensor
• (1) Thermostat Housing Gasket
• Mishimoto Lifetime Warranty
• 2001 - 2005 BMW 320i Base
• 2000 BMW 323Ci Base
• 1999 - 2001 BMW 323i Base
• 1999 BMW 323is Base
• 1999 - 2000 BMW 323ti 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
• 2005 BMW 330Ci M
• 2001 - 2006 BMW 330i Base
• 2005 BMW 330i M
• 2001 - 2005 BMW 330xi Base
• 2001 - 2005 BMW 525i Base
• 1999 - 2000 BMW 528i Base
• 2001 - 2005 BMW 530i Base
• 2004 - 2006 BMW X3 2.5i
• 2004 - 2006 BMW X3 3.0i
• 2001 - 2006 BMW X5 3.0i
• 2001 - 2006 BMW X5 4.4i
• 2003 - 2006 BMW X5 4.4i Formula 1
• 2002 - 2006 BMW X5 4.4i Lujo
• 2002 - 2006 BMW X5 4.4i Top Line
• 2002 - 2003 BMW X5 4.6is
• 2004 - 2006 BMW X5 4.8is
• 1999 BMW Z3 1.9i
• 2000 BMW Z3 2.0i
• 2001 - 2002 BMW Z3 2.2i
• 1999 - 2000 BMW Z3 2.8i
• 2001 - 2002 BMW Z3 3.0i
• 1999 - 2002 BMW Z3 Coupe
• 1999 - 2002 BMW Z3 M Coupe
• 1999 - 2002 BMW Z3 M Roadster
• 1999 - 2002 BMW Z3 Roadster
• 2003 - 2006 BMW Z4 2.5i
• 2003 - 2006 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

Note: Vehicle must be equipped with stock plastic thermostat housing (Genuine BMW 11537509227) in order to install this thermostat.The metal pin must be carefully removed from the Mishimoto thermostat with pliers before installed into plastic thermostat housing.