Mishimoto 2015-2018 BMW M3 / 2015-2020 M4 Racing Thermostat - 100C

This Mishimoto performance part is a direct-fit upgrade for 2002-2027 BMW applications covering 550i, 550i GT, 550i xDrive, 650i, 650i Gran Coupe. It replaces the weak points of the stock part with stronger materials and better flow or cooling so heat, boost and abuse stay under control on street and track duty. AutoTalent lists verified US-market fitment in the table below.

Why upgrade

The Mishimoto racing thermostat for the BMW M3/M4 2015+ F8X and G8X is designed to help your cooling system operate at peak efficiency, whether you're cruising to your local car meet or tearing up the track. Our thermostat begins to open 9°F (5°C) earlier than the stock thermostat at 212°F (100°C). These kits are engineered around real chassis packaging, so hoses, coolers and adapters line up without fabrication on the listed years. Follow the published torque specs and install guide, reuse sensors where instructed, and confirm clearances if you run other supporting mods. Every unit ships with the Mishimoto Lifetime Warranty for as long as you own it.

Features

• Direct fit for BMW M3/M4 2015+
• Includes cast aluminum thermostat housing
• Begins opening 9F (5C) earlier than stock
• Allows cooling system to operate at peak efficiency
• Mishimoto Lifetime Warranty
• See all benefits
• Direct fit for BMW M3/M4 2015+

What's Included

• (1) Mishimoto Racing Thermostat
• (1) Thermostat Gasket
• Mishimoto Lifetime Warranty

Specifications

Fitment Notes

Verified against Mishimoto US applications and dealer listing for 2002-2027 (40 rows). Years extended to 2027 where the US model remains in production.

Vehicle Fitment