COMETIC ? APEXI ? Who makes a stock rep. Head gasket?

[Beanstalk]

Ok I am trying to support Frsport but finding a stock headgasket is a pain. I was told that the stock bore size is 87.5mm by Guys at Alamo motorsports. Then the guys at FR said it was 86mm which is what i thought it was. So what size do i order? Who is right ?

[s13rb25det]

im pretty sure stock size is 89mm. and felpro and a lot of other companys make the stock headgaskets to be used with slightly bored out engines.

[Ilvemynissan]

Call a dealership. Can't go wrong with oem.

[Cone Junky]

Stock bore is 89mm.

[Beanstalk]

How do know ? and why would pistons come in 86mm?? I know they cant be the same size but 1mm is a $hit load

[Hijacker]

Depends on what motor you're talking about. SRs have an 86mm bore.

If you're wanting a stock replacement headgasket, just go with Nissan. The stock headgaskets are very well priced.