no it is not necessary. just get a new set of genuine ones like pelican parts sell or you could shop around for other places like BMA parts etc. IMO make sure they are genuine if going for stock spec since valve springs are one of the most stressed components in the engine.
schrick, vac (eibach), PPF, + others sell high performance ones but are not needed in your case they wont hurt anything should you choose them though
schrick, vac (eibach), PPF, + others sell high performance ones but are not needed in your case they wont hurt anything should you choose them though



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