Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
Optimize your Mazda RX-7's cooling system with the Mishimoto Part Number misMMTS-RX7-89 racing thermostat. Designed specifically for models from 1989 to 1995, this thermostat ensures your engine maintains cooler operating temperatures, particularly beneficial when you have upgraded or modified turbo applications. Featuring a activation temperature 14°C lower than OEM thermostats, it allows coolant to flow through the engine sooner once fully warmed, which helps prevent overheating during intense driving conditions.
Constructed to promote better thermal management, the Mishimoto racing thermostat aids in reducing high engine temperatures that often occur in high-performance setups. Its precise engineering ensures quick response and durability, making it an ideal choice for enthusiasts seeking reliable cooling performance. This thermostat is compatible with a variety of vehicles beyond the Mazda RX-7, including certain Toyota, Ford, Mercury, Daihatsu, and Merkur models, as detailed in the application guide. Installing this component can lead to improved engine efficiency, enhanced turbo performance, and potentially increased engine longevity.
Designed with quality materials, the Mishimoto thermostat is easy to install and fits seamlessly into your vehicle's cooling system. Whether you're upgrading your turbocharged RX-7 or maintaining a classic model, this racing thermostat offers a straightforward upgrade to help keep your engine running cooler and more efficiently. Proper cooling management is essential for high-performance applications, and Mishimoto provides a reliable solution to meet those demands while ensuring optimal engine temperature regulation.
Features:
Fitment:
1988 Toyota 4Runner DLX
1988 Toyota 4Runner SR5
1988 Toyota Pickup Base
1988 Toyota Pickup DLX
1988 Toyota Pickup SR5
1988 Toyota Pickup SR5 Turbo
1989 Mazda RX-7 Convertible
1989 Mazda RX-7 GTU
1989 Mazda RX-7 GTUs
1989 Mazda RX-7 GXL
1989 Mazda RX-7 GXL 2+2
1989 Mazda RX-7 Turbo
1989 Toyota 4Runner DLX
1989 Toyota 4Runner SR5
1989 Toyota Pickup Base
1989 Toyota Pickup DLX
1989 Toyota Pickup SR5
1990 Mazda RX-7 Convertible
1990 Mazda RX-7 GTU
1990 Mazda RX-7 GTUs
1990 Mazda RX-7 GXL
1990 Mazda RX-7 GXL 2+2
1990 Mazda RX-7 Turbo
1990 Toyota 4Runner SR5
1990 Toyota Pickup Base
1990 Toyota Pickup DLX
1990 Toyota Pickup SR5
1991 Mazda RX-7 Base
1991 Mazda RX-7 Convertible
1991 Mazda RX-7 Turbo
1991 Toyota 4Runner SR5
1991 Toyota Pickup Base
1991 Toyota Pickup DLX
1991 Toyota Pickup SR5
1992 Toyota 4Runner SR5
1992 Toyota Pickup Base
1992 Toyota Pickup DLX
1992 Toyota Pickup SR5
1993 Mazda RX-7 Base
1993 Mazda RX-7 R1
1993 Mazda RX-7 Touring
1993 Toyota 4Runner SR5
1993 Toyota Pickup Base
1993 Toyota Pickup DLX
1993 Toyota Pickup SR5
1993 Toyota T100 Base
1993 Toyota T100 One-Ton
1993 Toyota T100 SR5
1994 Mazda RX-7 Base
1994 Mazda RX-7 R2
1994 Mazda RX-7 Touring
1994 Toyota 4Runner SR5
1994 Toyota Pickup Base
1994 Toyota Pickup DLX
1994 Toyota Pickup SR5
1994 Toyota T100 Base
1994 Toyota T100 DX
1994 Toyota T100 SR5
1995 Mazda RX-7 Base
1995 Mazda RX-7 R2
1995 Mazda RX-7 Touring
1995 Toyota 4Runner SR5
1995 Toyota Pickup Base
1995 Toyota Pickup DLX
1995 Toyota Pickup SR5
2001 Mazda Tribute DX
2001 Mazda Tribute ES
2001 Mazda Tribute LX
2002 Mazda Tribute DX
2002 Mazda Tribute ES
2002 Mazda Tribute LX
2003 Mazda Tribute DX
2003 Mazda Tribute ES
2003 Mazda Tribute LX
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
