Maruha Metal Head Gasket

MAR07030501
278,00 €
Prices incl. VAT* , plus Shipping cost
Stock: available
Delivery time: 3 up to 6 days to Germany
Delivery time for other countries differs
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  • Mazda MX-5 MK1, MK2 1,8l BP Bore 86mm t1mm
  • Item weight: 0,6kg
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1. Features of metal head gaskets for B6 STD bores

We used to use 81.0mm diameter bores for STD pistons (78.0mm-81.0mm).
However, many users do not require compression down, and their requests are enough to change our bore diameters.

The improved bore diameter is 79.0mm, even though a STD cylinder bore is 78.0mm.
The reason why we have decided 79.0mm is that the diameter ranges of the genuine pistons for O/H gaskets are up to 78.5mm.

The genuine head gasket, made with asbestos, actually has a 79.5mm bore diameter and a 1.3mm thickness, while our production for tuning lovers has no-frills specification.
That is, our metal head gaskets have a more user-friendly spec than the genuines that are not good for tunings.

2.Features of metal head gaskets for B6 and BP turbo engines

We emphasize that bore thickness of stopper types is 2.0mm.
This allows gaskets for superchargers and turbochargers to be a superior stopper.
The stopper type gaskets can control compression ratios precisely and can prevent dropping gaskets caused by severe boost pressures.


We have bead types and stopper types for Maruha Head Gasket Lines.
At the next step, we will mention the differences between the 2 types.

3. Specifications of bead type gaskets
Our bead type gaskets include spring-powered metal beads sandwiched in punched out stainless steel.( Part # MAR0000008 )
The beads act as sealing between the heads and the blocks by the spring power.
In other words, they can bring even surface pressure and stable seal maintenance to the gaskets.



4. Specifications of stopper type gaskets
( Part # MAR0000005, MAR0000006, MAR0000009 )


Stopper type gaskets are aimed at prevention of a gasket blowing to stand boost pressures.

They are turbo gaskets that can allow severe boost pressures in the long term.
In order to maintain the product quality, the stopper, that surface is uneven, is placed around the bore in the center of the gasket.
That is, the uneven surface is acted as the stopper.

The stopper is set on the single side of the gasket, which is different from grommet types.
And the other side is flat to increase sealing by fitting the bead gasket to stainless steel.
The uneven surface pressure, thus the cylinder area is good to withstand boost pressures.

Metal head gaskets are all-purpose used as genuine parts as well as tunings.
They used to be pricey, but become popular because mass production of them can contribute to stable price levels and in order to prevent asbestos gaskets from causing air pollution and health damage.

The great point of metal head gaskets is metal’s high conduction that avoids heat accumulation.
It conducts heat within a combustion chamber to a block side smoothly and can be reduced gasket blowing caused by heat fusion.

Spring boards on the beads act as improving steady sealing pressure resulted in the stress power between the head and the block.
Therefore, ideal compression ratios and squish areas just as you intended can be easily maintained by layering several boards.

Maruha Metal Head Gasket is free from blowing a gasket and moreover, you will be surprised at its easily tuning.