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jsc speed performance parts
Sema Member jsc speed
Subaru WRX & STi 2.0L EJ20, & 2.5L EJ255/EJ257 Headgaskets
Subaru OEM - Cometic
subaru sti wrx ej257 ej255 head gasket Subaru OEM 2.5L Headgaskets:
The OEM Subaru EJ255 2.5L 06-08 WRX & EJ257 04-09 2.5L STi headgasket is multi-layered steel. The OEM EJ25 gaskets have been shown to hold up under extensive boost pressures and high temperatures. Subaru 2.5L engines built on 06/2006 and before require a different part number then 2.5L engines built on 07/2006 and after. Please refer to your drivers side door jam to determine the build date of your vehicle. Price is for a pair.
Shipping costs are calculated upon checkout.
NOTE: Subaru 2.5L engines have varying parts numbers depending on date of manufacture, please refer to your drivers side door jam for the build date.
FITMENT: 04-09 STi & 06-08 WRX w/ 2.5L, Head gaskets are build date specific please choose accordingly below
Description Part #: MSRP: Price: Inventory
All STi models
build dates 1/04-6/06		    11044AA642   
$113
$76
Usually ships in 2 days
2.5L WRX models
build dates 4/05-6/06		    11044AA770   
$168
$112
Usually ships in 2 days
2.5L WRX & STi models
build dates 6/06-6/07		    11044AA770   
$168
$112
Usually ships in 2 days
2008 WRX specific    11044AA770   
$168
$112
Usually ships in 2 days
2008-2009 STi specific    11044AA770   
$168
$112
Usually ships in 2 days
cometic head gasket
cometic subaru wrx sti ej20 ej257 head gasket mls Cometic WRX & STi Headgaskets:
Cometic multi-layer steel (MLS) headgaskets for the for the Subaru 2.0L & 2.5L EJ series turbo engines are comprised of three layers of stainless steel. Cometic uses stainless steel for increased strength, it's ability to rebound, and improved corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with Viton rubber, to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes.
Cometic's Viton coating is heat resistant to 250 degrees celcius or 482 degrees farenheit. By design the MLS gasket promotes an even torque across the sealing surface allowing for measurable reduced bore distortion. Price is for a pair gaskets, select engine, bore, & thickness below.
Shipping costs are calculated upon checkout.
NOTE: 2.0 Liter and 2.5 Liter headgaskets differ, please choose accordingly.
FITMENT: 2002-2009 WRX (2.0 & 2.5) & 2004-2009 STi
2002-2005 2.0 Liter WRX
Bore/Thickness Part #: MSRP: Price: Inventory
93mm Bore / .027in    C4261-027   
$101.45
$101.45
Usually ships in 5-10 Days
93mm Bore / .030in    C4261-030   
$101.45
$101.45
1 in stock
93mm Bore / .036in    C4261-036   
$101.45
$101.45
Usually ships in 5-10 Days
93mm Bore / .040in    C4261-040   
$101.45
$101.45
3 in stock
93mm Bore / .045in    C4261-045   
$101.45
$101.45
2 in stock
93mm Bore / .051in    C4261-051   
$101.45
$101.45
7 in stock
93mm Bore / .080in    C4261-080   
$166.13
$166.13
Usually ships in 5-10 Days
93mm Bore / .095in    C4261-095   
$188.80
$188.80
Usually ships in 5-10 Days
2006-2009 WRX (2.5L) & 2004-2009 STi (2.5L)
Bore/Thickness Part #: MSRP: Price: Inventory
100mm Bore/ .027in    C4264-027   
$101.45
$101.45
Usually ships in 5-10 Days
100mm Bore/ .030in    C4264-030   
$101.45
$101.45
1 in stock
100mm Bore/ .036in    C4264-036   
$101.45
$101.45
Usually ships in 5-10 Days
100mm Bore/ .040in    C4264-040   
$101.45
$101.45
5 in stock
100mm Bore/ .045in    C4264-045   
$101.45
$101.45
3 in stock
100mm Bore/ .051in    C4264-051   
$101.45
$101.45
2 in stock
100mm Bore/ .060    C4264-060   
$146.33
$146.33
10 in stock
100mm Bore/ .080in    C4264-080   
$166.13
$166.13
1 in stock
100mm Bore/ .120in    C4264-120   
$236.70
$236.70
Usually ships in 5-10 Days
102mm Bore/ .040in    H1631SP2040S   
$101.45
$101.45
Usually ships in 5-10 Days
103mm Bore/ .040in    H1631SP3040S   
$101.45
$101.45
Usually ships in 5-10 Days
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