Not sure what they're called but where can I get the 4 little round gaskets/seals that seals the coolant crossover piping to the motor? I heard they're like 30 bucks from the stealership and that some people just use silicone instead? What is the purpose of that piping anyway? prevent air pockets?
Thanks

 

I'm not exactly what there purpose it but if there is a shop that speicializes in ls1's then go there... That's where I got mine I got them for free cuz I knew the owner but you should try at a place like that and you could probly get them for like $10

 

They are metal/rubber gaskets
sold as a piece....
http://www.sdparts.com/product/12551933/SEAL.aspx

roughly the same price with shipping though.

 

What's this for anyway? Can I just use sealer instead? From what I remember it had a pretty snug seal when they went in.