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Cosworth High Performance Head Gaskets


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.

 

Cosworth Head Gaskets feature a stopper layer for unparalleled sealing performance.



Product Features:
  • 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 areas.
  • 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 properties.
  • Available in a range of thicknesses for specific applications.

Applications available for Head Gaskets
HONDA
K20 / K24
Part Number
Bore Size
Thickness
Notes
87.00mm
0.80mm
Use with RAA, RAC, RBB, and RBC cylinder heads
87.00mm

1.10mm

Use with RAA, RAC, RBB, and RBC cylinder heads
90.00mm
1.10mm
Use with RAA, RAC, RBB, and RBC cylinder heads
87.00mm

1.10mm

Use with PRB, PNC, and PPA cylinder heads
87.00mm
1.10mm
Use with PRB, PNC, and PPA cylinder heads
90.00mm
1.10mm
Use with PRB, PNC, and PPA cylinder heads
MITSUBISHI
4G63
Part Number
Bore Size
Thickness
Notes
86.00mm
1.30mm
Evo IV-VIII; 1997-2005 4G63
86.00mm
1.50mm
Evo IV-VIII; 1997-2005 4G63
86.00mm
1.30mm
Evo IX; Use with 4G63T MIVEC
86.00mm
1.50mm
Evo IX; Use with 4G63T MIVEC
4B11T
Part Number
Bore Size
Thickness
Notes
87.00mm
1.10mm
 
87.00mm
1.30mm
 
NISSAN
RB25DE/T
Part Number
Bore Size
Thickness
Notes
87.00mm
1.10mm
 
87.00mm
1.50mm
 
RB26DETT
Part Number
Bore Size
Thickness
Notes
87.00mm
1.10mm
 
87.00mm
1.50mm
 
87.00mm
1.80mm
 
SR20DE/T
Part Number
Bore Size
Thickness
Notes
87.00mm
1.10mm
 
87.00mm
1.50mm
 
87.00mm
1.80mm
 
90.00mm
1.10mm
 
90.00mm
1.50mm
 
VQ35DE
Part Number
Bore Size
Thickness
Notes
96.00mm
0.60mm
Set of 2 gaskets
98.00mm
0.60mm
Set of 2 gaskets
101.0mm
0.60mm
Set of 2 gaskets
SUBARU
EJ20
Part Number
Bore Size
Thickness
Notes
101.0mm
0.78mm
Single Gasket; Requires two gaskets for a complete set
101.0mm
1.10mm
Single Gasket; Requires two gaskets for a complete set
EJ25
Part Number
Bore Size
Thickness
Notes
101.0mm
0.78mm
Single Gasket; Requires two gaskets for a complete set
101.0mm
1.10mm
Single Gasket; Requires two gaskets for a complete set
101.0mm
1.50mm
Single Gasket; Requires two gaskets for a complete set
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Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=0.78mm Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=1.10mm Cosworth High Performance Head Gasket 2002-2005 Subaru WRX EJ20 (2.0L) - 93mm Bore / 0.78mm thickness Cosworth High Performance Head Gasket 2002-2005 Subaru WRX EJ20 (2.0L) - 93mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=1.50mm
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Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=0.78mm Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=1.10mm Cosworth High Performance Head Gasket 2002-2005 Subaru WRX EJ20 (2.0L) - 93mm Bore / 0.78mm thickness Cosworth High Performance Head Gasket 2002-2005 Subaru WRX EJ20 (2.0L) - 93mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket for 2006-2014 Subaru Impreza WRX, 2004-2007 STI EJ255 EJ257 Bore=101mm, Thickness=1.50mm
Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=0.78mm Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=1.10mm Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=1.50mm Cosworth High Performance Head Gasket 2001-2005 Mitsubishi Lancer Evolution VII-VIII 4G63BT (2.0L) - 86mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2001-2005 Mitsubishi Lancer Evolution VII-VIII 4G63BT (2.0L) - 86mm Bore / 1.50mm thickness
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Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=0.78mm Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=1.10mm Cosworth High Performance Head Gasket for 2008-2016 Subaru Impreza STI EJ257 Bore=101mm, Thickness=1.50mm Cosworth High Performance Head Gasket 2001-2005 Mitsubishi Lancer Evolution VII-VIII 4G63BT (2.0L) - 86mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2001-2005 Mitsubishi Lancer Evolution VII-VIII 4G63BT (2.0L) - 86mm Bore / 1.50mm thickness
Cosworth High Performance Head Gasket 2006-2007 Mitsubishi Lancer Evolution IX 4G63BT MIVEC (2.0L) - 86mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2006-2007 Mitsubishi Lancer Evolution IX 4G63BT MIVEC (2.0L) - 86mm Bore / 1.50mm thickness Cosworth High Performance Head Gasket 2008+ Mitsubishi Lancer Evolution X 4B11T MIVEC (2.0L) - 87mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 2008+ Mitsubishi Lancer Evolution X 4B11T MIVEC (2.0L) - 87mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 0.80mm thickness - Use w/ RAA/RAC/RBB/RBC heads
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Cosworth High Performance Head Gasket 2006-2007 Mitsubishi Lancer Evolution IX 4G63BT MIVEC (2.0L) - 86mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2006-2007 Mitsubishi Lancer Evolution IX 4G63BT MIVEC (2.0L) - 86mm Bore / 1.50mm thickness Cosworth High Performance Head Gasket 2008+ Mitsubishi Lancer Evolution X 4B11T MIVEC (2.0L) - 87mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 2008+ Mitsubishi Lancer Evolution X 4B11T MIVEC (2.0L) - 87mm Bore / 1.30mm thickness Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 0.80mm thickness - Use w/ RAA/RAC/RBB/RBC heads
Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.50mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.80mm thickness Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 0.80mm thickness - Use w/ PRB, PNC, and PPA heads Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 1.10mm thickness - Use w/ PRB, PNC, and PPA heads
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Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.50mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 87mm Bore / 1.80mm thickness Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 0.80mm thickness - Use w/ PRB, PNC, and PPA heads Cosworth High Performance Head Gasket 2001-2008 Acura/Honda Civic / RSX K20/K24 (2.0L/2.4L) - 87mm Bore / 1.10mm thickness - Use w/ PRB, PNC, and PPA heads
Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 88.0mm Bore / 0.38mm thickness Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 88.0mm Bore / 0.80mm thickness Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 90.0mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 90mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 2003-2006 Nissan 350Z /G35 VQ35DE (3.5L) - 96mm Bore / 0.60mm thickness - Set of 2
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Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 88.0mm Bore / 0.38mm thickness Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 88.0mm Bore / 0.80mm thickness Cosworth High Performance Head Gasket 2000-2008 Honda S2000 F20C, F22C (2.0L/2.2L) - 90.0mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 1989-2002 Nissan 240SX / Silvia SR20DE/T (2.0L) - 90mm Bore / 1.10mm thickness Cosworth High Performance Head Gasket 2003-2006 Nissan 350Z /G35 VQ35DE (3.5L) - 96mm Bore / 0.60mm thickness - Set of 2
   
 
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