Mishimoto Racing 68°C Thermostat for RX-7 FC3S and FD3S

£50.00 £45.00 (inc VAT)

At home at the track of on the street This thermostat will open a a lower coolant temperature compares to Mazda’s OEM thermostat.

Operating temperatures 82°C vs 68°C

2 in stock (can be backordered)

Purchase this product now and earn 45 ER Points!


The Mazda RX-7 is well known for its high-revving rotary engine and well-balanced chassis. An overheating engine can result in a ruined track day or a damaged engine.

A Mishimoto racing thermostat is the ideal upgrade for improved cooling reliability and efficiency.

The Mishimoto racing thermostat for the 1989-2002 Mazda RX-7 (FC – FD)will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will significantly lower high engine temperature produced by modified and upgraded turbo applications. Once the engine is fully warmed up the Mishimoto racing thermostat  (68°C) will open up lower than OEM thermostats (82°C) , allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.

As with all our products, this thermostat includes the Mishimoto lifetime warranty.

Ideal for all you track day nutters but equally at home on the street.

This is one of our optional upgrades during customer engine rebuilds.

Additional information


1989-1992 Mazda RX-7 FC3s
1991-2002 Mazda RX-7 FD3s
Other Vehicles
Mazda RX-7 GXL 90
Mazda RX-7 U 90
Toyota 4Runner DLX 89
Toyota 4Runner SR5 88-95
Toyota Pickup 81-93
Toyota Pickup DLX 82-95
Toyota Pickup LN55 DLX 87
Toyota Pickup LN67 87
Toyota Pickup SHT BD DLX EXC 91-92
Toyota Pickup SR5 83-95
Toyota T100 93
Toyota T100 One-Ton 93
Toyota T100 SR5 93-94

Activation Temprature

Mazda OEM 82°C/180°F
Mishimoto 68°C/154.4°F

Mishimoto Lifetime Warranty

Mishimoto Automotive (“Mishimoto”) warrants their products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorised dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For Mishimoto's complete warranty policy, please follow this link


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