Cosworth 20002145 High Performance Head Gaskets Subaru WRX STI EJ25 2.5L
Cosworth High Performance Head Gaskets are engineered to seal in
power under the most demanding conditions.
Constructed from stainless
steel with a folded stopper layer, each application features superior
sealing compared to conventional multi layer steel gaskets.
Additionally, Cosworth High Performance Head Gaskets are manufactured
from pre-coated die cut stainless steel resulting in uniform coating
distribution and consistent shape.
Suitable for EJ257 with single AVCS
Subaru gaskets are sold individually. Order two for a complete set.
Individual die cut layers of stainless steel with superior consistency compared to laser cut gaskets.
Pre-coated stainless steel with a 0.25 micron layer of nitrile
rubber ensures consistent distribution of coating with no high or low
Manufacturing dimensional tolerance of 0.002".
Die cut manufacturing process ensures smooth edges, unlike laser cut gaskets.
Cosworth gaskets feature a "folded stopper" sealing layer for
additional torque around each cylinder. The width of sealing area is
specific for each application thereby providing ultimate sealing
Available in a range of thicknesses for specific applications.
Bore = 101mm, Thickness = 1.5mm
Suitable for lowering compression ratio when using EJ20 cylinder heads on EJ25 short block.