Did Stock TA's ever come with NGK plugs. I bout my car with 26,000 miles on it in 02 and just put my headers on and changed the plugs now with 56,000 miles on it. I never changed them before but there was NGK plugs in it but not TR55's ust wondering if they came with those stock. Always thought Delco's where the stock plugs.

 

Actually yes.. Kinda sorta..

For a while ls1's in general came with some NGK's because of a supply issue or something like that. I think it was in 99-00ish or something.

 

Yeah they looked like really cheap NGK's

 

Are they Platinum? They only came with plat plugs. Mine had Denso plugs stock.

 

yep

 

nope not plat. Just cheapy NGK's

 

My old '98 1LE had NGK's in it stock, and they were platinum.

 

someone could have easily changed them at 25k...who knows...

least you have good ones in now

 

Very True.