Changing Spark Plugs on W210, E320,2001
#32
Spark plugs for 2001 E320Matic
I just went on-line @autohausaz.com. They have 4 different plugs listed. They have one listed as better, one the original, and 2 others. The numbers are 4501(improved), 9652(original), 4418,7422. Should I get the improved, the original, and I don't want the last 2 cheaper ones. Which should I purchase for best performance and last??
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