Intake Manifold Heat Insulating Gasket

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Hondata has developed a special high temperature insulating gasket which replaces the stock intake gasket. The Miata manifold is heated in up to 5 places - From the cylinder head, the cold idle valve, the idle control valve and the throttle body heater. Hondata's new gasket reduces the transfer of heat from the cylinder head to the intake manifold and incoming air, giving you up to 5% more power. The intake manifold is made of aluminum and because it is heated by the cylinder head from combustion and coolant, it can increase intake air temperatures by as much as 75 deg F. In fact, for every 5 deg F rise in intake temperature, air density drops 1%. The hotter the air, the less fuel the computer injects to compensate for reduced oxygen. Around town, testing has shown an average drop of around 20 degrees F which is good for a 3 percent power increase. In certain conditions a 50 deg F drop has been measured. The Heat shield gasket kit contains an insulating gasket and installation instructions.

Moss Has You Covered

  • All products we sell are warrantied against defects in material and workmanship by the original equipment manufacturer or Moss Motors, Ltd., for 12 months from the date of shipment.
  • We will replace the product or refund your purchase price at our discretion.
  • The warranty does not cover labor, failure of a related component, failure resulting from faulty installation, nor would the liability of Moss Motors exceed the cost of the original component.
  • Warranty requests should be submitted to our sales department and must be supported by the original Moss Motors purchase invoice and documentation of the failure.
  • Many of the brands we carry have their own warranty terms that have you covered outside of our 12 month protection.
Make: Mazda Model: MX-5 Miata Series: NA Year: 1990, 1991, 1992, 1993