Hello everyone,

I was wondering, can I replace my spark plug by my self?? What is the best spark plug to get for my 2008 G37s coupe and how much would cost ??

Thank You

 

Spark plug replacement isn't particularly difficult so if you're reasonably competent with tools and mechanical tasks you should be OK. NGK or Denso are probably the most common quality replacement plugs for our cars.

Denso FXE24HR11 are about $10 each.
NGK DF8H-11B about $33 each.

Do not ask me why there's such a huge price disparity, I don't know. Both are quality parts that will probably last for as long as you have the car.

 

^^ Yeah, the cost of those NGK plugs is utterly absurd. The FSM call out is for the Denso anyway, so there is absolutely no reason to suffer that kind of pricing.

 

I would replace it with whatever the OE plug is. On the bikes, NGK was used in most applications (jap bikes). They worked well, lasted ~30-40K miles (less so on older bikes). They were still pricey $6-8/ea. Wonder what makes the ngk demand such a premium for this part #. Either something special about it, or a very uncommon plug.

 

Replacement isn't too bad however you do have to take off the intakes and throttle bodies to access access all 6 plugs. While doing so it is a good idea to clean the throttle bodies if they need it