GrimmSpeed Head Gasket Set .78mm 2008-2014 WRX / 2004-2007 STI / 2005-2009 Legacy GT / 2004-2008 Forester XT

GrimmSpeed has set the standard for quality when it comes to aftermarket replacement gaskets so it’s only natural that we should offer our fans the MOST important gaskets their car will ever need: Introducing The GrimmSpeed EJ25 Head Gasket Sets! Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster.

The GrimmSpeed Head Gaskets feature a multi-layer steel (MLS) construction, in which multiple grades are used to provide optimal surface and combustion chamber sealing as they are torqued down. The top and bottom layers feature a Nitrile Rubberized Coating that helps accommodate a rougher RA surface finish of up to 50microinch. This acts to better seal the non-critical areas of the gasket. In addition, the gasket edge includes a folded stopper layer that allows for optimal sealing for the combustion chamber. This is done to help reduce the chances of combustion gasses causing head gasket failures under extremely high cylinder pressures that built engines can experience.

After talking to numerous engine builders/tuners it was clear that creating a variety of gasket thicknesses was key for pairing them with the right build. With that in mind, we’ve made the gaskets available in multiple thicknesses (.78, 1.1, 1.5mm) to help fine tune each individual build. In addition, the slightly oversized bore diameters will allow for up to 0.5mm overbore.

DETAILS:

• 0.78mm thickness
• Multi-layered steel construction
• Nitrile Rubberized Coating on the top layer
• Folded stopper layer on the gasket edge
• Enlarged center head bolt holes to accommodate up to a 13mm head stud bolt
• Slightly oversized bore diameters will allow up to a 0.5mm overbore
• For single AVCS models
• Sold as a set of head gaskets

FITMENTS: 

• 2004-07 Subaru STI [EJ25 SAVCS]
• 2006-14 Subaru WRX [EJ25 SAVCS]
• 2004-13 Subaru Forester XT [EJ25 SAVCS]
• 2005-09 Subaru Legacy GT [EJ25 SAVCS]
• 2005-09 Subaru Outback XT [EJ25 SAVCS]