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SKU: MMTS-MIA-99 | UPC: 748354027136
Mishimoto 99-05 Mazda Miata NB 177 Degree Racing Thermostat
Engineered for 1999-2005 Mazda Miata NB models, the Mishimoto racing thermostat opens at 177°F to enable quicker coolant circulation and maintain lower operating temperatures in stock or modified engines. This direct replacement outperforms factory units by reducing heat soak during spirited driving or track sessions. Block fitment extends to select 1995 Mazda Protege models sharing compatible engines.
Key Features
- 177°F Opening Temperature: Activates sooner than stock 180-195°F thermostats to circulate coolant faster and keep engine temps down under load
- CNC-Machined Brass Construction: Provides corrosion resistance and reliable operation for long-term durability in demanding conditions
- Direct OEM Fitment: Bolts in place of factory thermostat with no modifications required for 99-05 Miata NB
- Included Gasket and O-Ring: Ensures leak-free seal upon installation for immediate performance gains
- Mishimoto Lifetime Warranty: Backed by guarantee against defects for peace of mind on street or track
Product Notes
- Ideal for naturally aspirated or boosted 1.8L BP engines in Miata NB
- Flush cooling system after install to remove air pockets and debris
- Packaged in protective retail box weighing 0.35 lbs with dimensions 4.1 x 3.5 x 1.8 inches
Installation Notes
- Professional installation recommended.
- Drain radiator and engine coolant before removal of stock unit
- Torque to factory specs. compatible with all stock hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999 | Mazda | Miata | 10th Anniversary |
| 1999-2005 | Mazda | Miata | Base |
| 2000-2005 | Mazda | Miata | LS |
| 2004-2005 | Mazda | Miata | Mazdaspeed |
| 2000-2003 | Mazda | Miata | SE |
| 2003 | Mazda | Miata | Shinsen |
| 1995 | Mazda | Protege | DX |
| 1995 | Mazda | Protege | ES |
| 1995 | Mazda | Protege | LX |
Why Choose Mishimoto?
- Proven leader in automotive cooling components for Mazda enthusiasts
- High-flow design tested for real-world track and street use
- Engineered in the USA with global materials for exact fit and function
Frequently Asked Questions
-
Q: Will this fit my 2001 Mazda Miata LS?
A: Yes, direct fit for all 1999-2005 Miata NB models including Base, LS, SE, Mazdaspeed, 10th Anniversary, and Shinsen editions -
Q: What material is the thermostat made from?
A: Precision CNC-machined brass housing with high-temperature polymer valve for strength and heat resistance -
Q: What is the warranty coverage?
A: Lifetime warranty protects against manufacturing defects when installed and used properly
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Secure Mishimoto retail box, 4.1 x 3.5 x 1.8 inches
- Weight: Product 0.15 lbs, Shipping 0.35 lbs
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