Replaced my stock manifold with the Megan racing header and cat delete. Unfortunately I went ahead and reused the stock exhaust manifold bolts. All of them came loose and the gasket was also blown out. So I planned to go get a new exhaust manifold gasket and replace the header bolts.. but for the life of me I can't find the bolt size or replacements? What size are they and should I run a little longer bolt and use a lock washer?

 

I can give you the size of the stock bolts and the gasket.

Manifold Gasket Part # 11621174968


http://www.ecstuning.com/Search/SiteSearch/11621174968/



ANd

Bolt - ( M8X30 ) - Priced Each M8x30 size Part #07136800269


http://www.ecstuning.com/Search/SiteSearch/07136800269/ES16467/



Thanks

Someone else might be able to chime in to help you with the aftermarket header issues.

 

im about to replace my header... its on 05' with 32k miles, think i should get new bolts and a gasket?

 

Awesome! That's what I needed, just to verify the M8 x 30 size. The stock bolts work fine. But I know reuse of stock bolts sometimes leads to them loosening up over time. So I just wanted to order up the correct size bolt.

I would replace the gasket if anything.. generally OEM spec is best imo. My stock bolts were loose a month or so after installing the header.. gasket is about shot too. So I'm replacing both, might not hurt to put fresh bolts/gasket when you throw on a new header.

 

Great,

Glad I could help.

Good luck on the install.