Is the inner diameter or the outer diameter 2.5 for the JDM donut gasket?

 

OD, I think. Check the FAQ

 

If you need one, you can use an S2000 gasket or CRV gasket from honda or other...
https://honda-tech.com/zerothread?id=1420031

or off 02-05 crv
cheaper
18229-SCA-T11 list 20.80
(one iam using on my header)

or

18229-S7C-003 list 25.68

and s2000

18229-PCX-003 list 24.87

 

i need one but i need one with a 2.5 inner diameter thats why i asked.

 

i use s2000 donut gaskets and work great.

 

was it 2.5 on the inside diameter

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by N ef A &raquo;</TD></TR><TR><TD CLASS="quote">bump</TD></TR></TABLE>

NO BUMPING in this forum.

That being said, just goto your dealer, ask for an s2k donut gasket and measure the ID with a caliper.

 

You can also go to napa auto parts and buy a 2.5 donut gasket for like 8 bucks and save the rest for lunch

 

2.5 is the inner diameter of the donut .. LOCK.

and you can use either the s2000 or the crv which will be cheaper...