Re: 156 2.5 v6 (1999) spark plugs cost?
The difficult bits are getting the rear plenum off..time consuming, and hopingthe plugs are not seized in, and having the right plug wrench.
For a first timer allow a couple of hours, and two cups of coffee and plain chocolate digestive biscuits to keep you mellow.
Don't use cheap plugs..go for the real deal NGKs
P.S. amongst the bogus receipts that came with my 24valve V6 164 was a garage receipt for changing FOUR plugs...now just think that one through for a moment or two. V6 owners who have changed their own plugs will know where i am coming from