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Old 05-08-2013, 02:35 PM   #1
RallySport Direct
NASIOC Storefront Vendor
Vendor Sales Rating: (95)
 
Member#: 33174
Join Date: Feb 2003
Chapter/Region: RMIC
Location: Salt Lake City Utah
Vehicle:
We are Open Late!
888-457-2559 Every day!

Default New TOMEI 2.5L Turbo Head Gaskets in 4 thicknesses! Available at RallySportDirect.com



2004-2007 STI / 2006-2013 WRX


Click On any Image or Link below for more details
==>CLICK ME FOR MORE INFO<==



Bore:
101mm


Thickness:
.7mm / .0275in
1mm / .0393in
1.2mm / .0472in
1.5mm / .059in




The factory gasket is made from metal but the design is the bead type which is not as effective in sealing as the super grommet design. Most aftermarket metal gaskets are of the grommet design which is better, but the TOMEI Super Grommet design gives you the highest sealing efficiency possible and increased durability.

With each model change from Subaru engineers the improved engine design from the GC8 to GDB and A models had the increased the rib of the outer bore diameter which improved the gas sealing characteristics. But the results of that change made the water and oil galleries seal decrease. So when the power is increased there is also the increased possibility for oil and water leaks to occur. TOMEI engineers had a second look at the design of the rib height and the Super Grommet Design and they have achieved an overall improvement in overall seal.

They have made multiple thicknesses available to achieve your desired compression ratio for your application. Now you can build an engine with higher accuracy to suit your needs.
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