Hello you moose owners! I also plan to change the spark plugs in the V40 1.8 Bj: 03/2003. At the moment I am so far thinking that the spark plugs should have 3 or 4 electrodes. Now the engine has the identification number: B4184 S2 (16 valves with cat). Which spark plugs do it have to be? (I found under the search indicator nothing useful). There stands for Bj: 2000 at the V40 1.8 what. I have already checked in the engine room where the spark plugs are sitting above all. And when I noticed that no spark plugs are sitting on the candles. Because here in the forum there was often talk of it, before you change the candles, the spark plugs have to be removed. What makes me so stuzy at this point. I already drove a car (no Volvo) in 1998 that had an electronic ignition system. What are the spark plugs at all at the V40? The next question goes there: What is a V40 1.8 and V40 1.8i? What is the difference?