SKU: MMTS-MIA-90L | UPC: 748666001398
Mishimoto 90-97 Mazda Miata 155 Deg F / 68 Deg C Racing Thermostat
Replace your stock thermostat with the Mishimoto racing thermostat that opens at 155°F (68°C) to lower engine operating temperatures on 1990-1997 Mazda Miata models. This direct-fit part also works on select Kia Sportage, Mazda 323, 626, B2600, and MX-3 vehicles sharing compatible engines. It enables earlier coolant circulation for better cooling during spirited drives and track sessions while maintaining quick warmup times.
Key Features
- 155°F Activation: Opens 20-30°F sooner than OEM units to promote constant coolant flow and drop operating temps by up to 20°F
- High-Flow Design: Larger bypass hole and calibrated spring increase flow rate without restricting pressure
- Brass Construction: Durable brass body resists corrosion and withstands high-pressure racing conditions
- Direct OEM Replacement: Bolts into factory housing with no modifications required for seamless integration
- Included Gasket: Comes with O-ring and gasket for immediate leak-proof installation
Product Notes
- Pair with Mishimoto radiator hoses and coolant for complete cooling system upgrade
- Flush cooling system prior to installation to remove debris
- Box dimensions 3.86 x 3.54 x 1.97 inches weight 0.2 lb ship weight 0.4 lb
Installation Notes
- Professional installation recommended.
- Drain coolant completely before removing stock thermostat
- Torque bolts to OEM specs 8-10 ft-lbs uses factory hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1995-2002 | Kia | Sportage | Base |
| 1995-2001 | Kia | Sportage | EX |
| 2001 | Kia | Sportage | Limited |
| 1986-1994 | Mazda | 323 | Base |
| 1986-1988 | Mazda | 323 | DX |
| 1988 | Mazda | 323 | GT |
| 1988-1989 | Mazda | 323 | GTX |
| 1986-1989 | Mazda | 323 | LX |
| 1988-1993 | Mazda | 323 | SE |
| 1988-1992 | Mazda | 626 | DX |
| 1990-1991 | Mazda | 626 | GT |
| 1991 | Mazda | 626 | LE |
| 1988-1992 | Mazda | 626 | LX |
| 1988-1989 | Mazda | 626 | Turbo |
| 1988 | Mazda | 626 | Turbo 4WS |
| 1989-1993 | Mazda | B2600 | Base |
| 1990-1993 | Mazda | B2600 | LE-5 |
| 1989 | Mazda | B2600 | LX |
| 1989-1993 | Mazda | B2600 | SE-5 |
| 1990-1997 | Mazda | Miata | Base |
| 1993 | Mazda | Miata | LE |
| 1994-1997 | Mazda | Miata | M Edition |
| 1991 | Mazda | Miata | SE |
| 1997 | Mazda | Miata | STO |
| 1992-1995 | Mazda | MX-3 | Base |
| 1992-1994 | Mazda | MX-3 | GS |
| 1993 | Mazda | MX-3 | SE |
Why Choose Mishimoto?
- Backed by lifetime warranty for long-term reliability
- Tested on dyno and race track for real-world performance
- Precision-engineered in the USA with global materials
Frequently Asked Questions
-
Q: Will this fit 1990-1993 Mazda Miata 1.6L and 1994-1997 1.8L models?
A: Yes direct fit for both NA Miata generations using compatible thermostat housing on B6-ZE BP engines -
Q: What material is the thermostat made from?
A: Solid brass body with stainless steel spring and EPDM O-ring for corrosion resistance and durability -
Q: What is the warranty and installation time?
A: Lifetime warranty against defects 30-60 minute install with basic tools after draining coolant
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective retail box 3.86 x 3.54 x 1.97 inches
- Weight: 0.2 lb product 0.4 lb shipping
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