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The Mishimoto racing thermostat for BMW N52, N54 and N55 engines is a direct‑fit replacement that opens at a lower temperature than stock to promote earlier coolant flow and cooler engine operation. It's intended for modified engines where improved cooling efficiency is needed; the thermostat helps the cooling system regulate temperature sooner during warm‑up and provides a simple swap to reduce operating temperatures.
Mishimoto BMW N52/N54/N55 Racing Thermostat
