Dodge Durango Forum II
Re: 2001 4.7 Spark Plug Autolight 3923 Correct Plug
Jake [01 SLT Plus 4.7 4x4]
jacobmchugh@yahoo.com
They will fit. the 23's & 24's are the same size but the 23 is a colder plug. It can help reduce engine knock. The only possible negative would be "fouling." I and many others on the forum have been running the 3923's with no problems.
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Fri May 28