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Description

BMW M52/M54/M56 Mishimoto thermostat with housing 97 °C

The Mishimoto thermostat E46 is a direct replacement for the original thermostat of BMW six-cylinders with M52, M54 and M56 engines, as found in the E46, E39 and Z4. The thermostat comes pre-installed in a durable OEM-quality housing, including sensor and gasket, so you replace a failed stock thermostat in one go.

This version opens at the stock temperature of 97 °C and restores the cooling system to the way BMW intended. A logical choice during maintenance or when your original thermostat has stuck. Looking for a lower opening temperature for a tuned engine? Choose the Mishimoto racing thermostat.

Key benefits

• Direct fit for BMW M52, M54 and M56 engines
• Opens at the stock temperature of 97 °C
• Pre-installed in an OEM-quality housing
• Sensor and housing gasket included
• Restores cooling system performance after a failed thermostat
• Mishimoto Lifetime Warranty

Suitable for

BMW with M52, M54 or M56 engine

• Engines: M52, M52TU B25, M52TU B28, M54 B25, M54 B30, M56
• Chassis codes according to Mishimoto: E46, E39, E60, E53, E83, E85, E86
• E36 only for the Z3 models

Technical specifications

• Manufacturer: Mishimoto
• Part number: MMTS-E46-99E
• Opening temperature: 97 °C (same as stock)
• Design: thermostat pre-installed in OEM-quality housing, with sensor
• Included: Mishimoto thermostat with housing and sensor, thermostat housing gasket

Installation and delivery

The complete thermostat housing replaces the original unit. Mishimoto rates the installation as medium. Use the included gasket, fill the system with good quality coolant and bleed it carefully. Lead time: 4 to 7 days.

A complete thermostat with housing and sensor: your six-cylinder’s cooling system back as it should be.

Why choose this Mishimoto thermostat E46?

A sticking thermostat is a known issue on the M52 and M54. With this complete unit you replace thermostat, housing and sensor in one go, without hunting for separate parts. Mishimoto backs it with a lifetime warranty.

Frequently asked questions

At what temperature does this thermostat open?

This version of the Mishimoto thermostat E46 opens at 97 °C, the same as the stock thermostat.

Is the housing included?

Yes. The thermostat comes pre-installed in an OEM-quality housing, with sensor and gasket.

Is there a version that opens earlier?

Yes. Mishimoto also offers a racing thermostat for these engines that opens earlier, intended for tuned engines.

What is the lead time?

The lead time is 4 to 7 days.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.