Mishimoto BMW M52/M54/M56 Racing Thermostat with Housing - 70°C Performance Upgrade

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 48F (27C) 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. Engine coolant thermostat designed to regulate coolant flow and maintain optimal operating temperature. Ensures efficient warm-up, prevents overheating, and supports reliable performance with a precise fit.

• Begins opening 48F (27C) earlier than stock to let coolant flow through your radiator sooner
• Thermostat pre-installed in OEM-style housing
• Includes thermostat housing gasket

Upgrade your BMW's cooling system with the Mishimoto BMW M52/M54/M56 Racing Thermostat, designed to optimize engine performance and reliability. This high-performance thermostat begins opening 48°F (27°C) earlier than the stock unit, allowing coolant to flow into the radiator sooner and aiding in quicker heat dissipation. This feature is especially beneficial for modified engines that operate under increased stress or higher temperatures, ensuring your engine maintains optimal operating conditions during demanding driving scenarios.
Constructed with a durable OEM-quality housing, the thermostat comes pre-installed for easy installation and features a gasket included for a secure seal. The precise fit and quality materials guarantee consistent operation, helping to prevent overheating and promote efficient warm-up cycles. Backed by Mishimoto’s lifetime warranty, this component is a reliable upgrade for BMW owners seeking enhanced cooling performance.
Designed specifically to fit models including BMW Z3 (1999-2003), 330xi (2001-2003), and 330i (2001-2003), this thermostat seamlessly integrates into your vehicle’s cooling system. Whether you're restoring a classic or tuning a modified engine, this thermostat provides a significant performance boost, supporting your vehicle’s durability and efficiency. Trust Mishimoto’s expertise to deliver a high-quality product that enhances your driving experience and engine longevity.

Features:

• Begins opening 48°F (27°C) earlier than stock to allow coolant flow into the radiator sooner

• Pre-installed in OEM-style housing for easy installation

• Includes thermostat housing gasket for a secure seal

• Designed for BMW M52, M54, and M56 engines

• Backed by Mishimoto’s lifetime warranty for peace of mind

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

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1