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Free shipping is available within the lower 48 states for orders totaling $199 or more. Simply select the free shipping option during checkout. Even though expedited shipping is not free we will still discount the free shipping option from the expedited shipping cost for you. This offer excludes shipments going to Alaska, Hawaii, Military Boxes, and items too large to ship via UPS or USPS. These items are usually large freight or bulky items such as engine blocks, etc.

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Popular Applications

  • TA4070-SB02C
  • Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.2mm Thick - Modern Automotive Performance
  • TA4070-SB02C
    TA4070-SB02C Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.2mm Thick - Modern Automotive Performance

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    Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.2mm Thick

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    PART# TOM TA4070-SB02C 
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    Free Shipping On Orders $199 and Up!

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    TA4070-SB02C
    TA4070-SB02C Tomei 101mm Bore Head Gasket (Subaru STI EJ25 04-12) 1.2mm Thick - Modern Automotive Performance

    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.

    Super Grommet Design
    Although the stock product is not metal, yet the sealing performance is limited due to the grommet type design. The sealing performance has been improved considerably with the super grommet, to suit these engines and has been proven to deliver excellent reliability. (Super Grommet = Dual Seal Method combining both the Bead Structure & Metal Grommet designs).

    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

    JDM
    EJ257 GRF, GVF

    USDM
    EJ255 06-07 WRX, 08+ WRX
    EJ257 04-07 WRX STI, 08+ WRX STI

    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.

    Super Grommet Design
    Although the stock product is not metal, yet the sealing performance is limited due to the grommet type design. The sealing performance has been improved considerably with the super grommet, to suit these engines and has been proven to deliver excellent reliability. (Super Grommet = Dual Seal Method combining both the Bead Structure & Metal Grommet designs).

    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

    JDM
    EJ257 GRF, GVF

    USDM
    EJ255 06-07 WRX, 08+ WRX
    EJ257 04-07 WRX STI, 08+ WRX STI

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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    Unfortunately due to vendor restrictions we are unable to sell this brand within Australia or the UK. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

    Hello!

    Unfortunately due to vendor restrictions we are unable to sell this brand within Australia. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

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    Unfortunately due to vendor restrictions we are unable to sell this brand within your country. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

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    Unfortunately due to vendor restrictions we are unable to sell this brand within California. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

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