A arumble New member Joined May 7, 2014 Messages 1 Reaction score 0 Points 0 Jun 23, 2014 #1 I have a 2003 GMC Sierra 1500HD SLT 6.0L. What is the best spark plug you've used so far? What is the OEM plug? Last edited: Jun 23, 2014
I have a 2003 GMC Sierra 1500HD SLT 6.0L. What is the best spark plug you've used so far? What is the OEM plug?
P Parts007 New member Joined Jun 18, 2014 Messages 116 Reaction score 0 Points 0 Location Bristol, Connecticut Jul 22, 2014 #2 OEM plug is platinum, 41-962
A Alex91191 New member Joined Jun 13, 2014 Messages 5 Reaction score 0 Points 0 Location california Jul 23, 2014 #3 OEM - Original Equipment Manufacturer.The product which is discovered and produced by manufacturer. Iridium IX Spark Plugs are the most technologically advanced high performance plugs available.
OEM - Original Equipment Manufacturer.The product which is discovered and produced by manufacturer. Iridium IX Spark Plugs are the most technologically advanced high performance plugs available.
