Fits the following vehicles:
- 1999-2000 Miata/MX-5 (BP-4A)
- 1999-2000 JDM/Euro Mazda Miata/MX-5 (BP-5A)
- 2004-2005 Mazdaspeed MX5 Turbo (BP-4A)
- 2001-2005 Mazda Miata/MX-5 (BP-Z3)
About Thermalnator Thermal Gaskets
Thermalnator is a unique high-temperature shielding gasket that replaces the stock intake manifold gasket. The cooling properties of the Thermalnator reduce heat by stopping metal-to-metal contact between the intake manifold and the engine block. Using a Thermalnator gasket reduces the heat of the air entering the engine, resulting in an increase of up to 5% in power.
The Thermalnator gasket allows your intake manifold to function like an intercooler. Because the manifold is no longer heated by the cylinder head, the heat from the incoming air is dissipated through the aluminum very rapidly. The basic formula is that for every 5°F increase in intake air temperature, air density decreases by 1%. Higher air density results in more horsepower.
Average testing has shown a 25-degree drop in temperature, with up to a 35-degree drop in some applications. This is why the Thermalnator gasket is an excellent upgrade for both stock and modified vehicles.
Before You Order
○ Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount you pay at checkout.
○ Confirmation of Compatibility
As our entire product database is based on North American vehicles (USDM), please confirm whether or not a product can be installed on a Japanese vehicle (JDM) before placing your order. (If you are unsure whether a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and model in the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your delivery address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the amount automatically calculated. In such cases, we will contact you individually by email.
All products are generally shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to check the delivery time. All products are shipped via air freight. No products are shipped by sea freight.
○ Regarding Compliance with Japanese Vehicle Inspection (Shaken)
The products we handle are basically all designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection System," and we are unable to provide strength calculation documents or similar paperwork for these systems. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, the packaging box and the product itself may sustain shipping damage. Please understand that we will only provide returns, refunds, or replacement exchanges for damaged items, defective products, or items different from your order if you contact us within 7 days of receipt. Please note that for products sold through us, warranty-related support will be provided "only through us." We do not provide support through other companies or distributors located within Japan.