Modern Automotive Performance
Modern Automotive Performance
  • TA4070-SB02D
  • Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.5mm Thick - Modern Automotive Performance
  • TA4070-SB02D
    TA4070-SB02D Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.5mm Thick - Modern Automotive Performance

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    Tomei 101mm Bore Head Gasket - 1.5mm Thick | 2004-2012 Subaru STI (TOM TA4070-SB02D)

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    PART# TOM TA4070-SB02D

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    TA4070-SB02D
    TA4070-SB02D Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.5mm Thick - Modern Automotive Performance

    STI Head Gasket 1.5MM Thickness

    The technological advancement of performance engines and even more so from tuned engines will increase the burden of stress on the head gasket. Under extreme conditions of high cylinder pressures and competition use, the head gasket is often the weakest point.

    The expansion and 3D pressure image shown, displays the effectiveness of the TOMEI multiple layered head gasket with the super grommet design (shown with the pressure image analysis ystem). The sealing performance is pursued with cross-section measurements and utilizing various functions within the design.

    Specific Rib Designs
    The gas sealing characteristics will improve with the raised rib, but the sealing characteristics of the neighbouring water and oil channels are equally reduced. Therefore when pushing for power gains, these areas are weak points that can allow leakages. The TOMEI design focuses on all areas to provide the maximum seal with the use of the super grommet design. By using the rib height to ensure an equal overall high surface pr ssure seal, where it's needed the most.

    Applications

    • 2004-2012 Subaru STI (EJ25)

    What's in the box?

    • 1 Tomei Head Gasket

    Warranty

    • Tomei Limited Warranty

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