As part of my 60000 mile service I attempted to replace the spark plugs. Prior to popping the hood I bought some NGK plugs as referenced by my local auto parts. Today I removed one of the original plugs only to find the REACH (thread lenght) was much longer on the original plug than on the NGK. I took the original plug down to my auto parts where they could not match what I had. They refunded my money and suggested I go to a Volvo dealer (which I won't do). I want to replace the plugs with something that matches the original and don't care about all of the fancy crap options. It appears some Denso plugs will match what I had.

What plug should I use?
ColoradoZ28

 

Check here: http://www.ipdusa.com/Volvo-S40-2005...p/c-1-135-439/