GrimmSpeed EJ25 Head Gasket Set 0.78mm - 2008-2021 STI

Description:
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.

Features:
- Sold as a Set/Pair - Dual AVCS fitment
- Die Cut Multi-Layer [Stainless] Steel (MLS) Construction - Provides smooth edge finish and consistency from batch to batch, ±0.001” manufacturing tolerance
- Folded Stopper Layer to Better Seal the Combustion Chamber
- .25micron Nitrile Rubber Layer Coating - Reduces chances of leaking on imperfectly smooth mating surfaces over non-coated gasket.
- Accommodates up to 100.0mm bore
- Compatible with up to 13mm, ½” studs
- 0.78mm (after crushing)

Notes:
- Sold As A SET

Applications:
2008-2014 STI
2015-2021 STI