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Spark plug part numbers and gap size?

nadrojcote

By nadrojcote
in Engines & Drivetrain

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nadrojcote Senior Enthusiast

nadrojcote

Posted
Posted

Does anyone know the part number for spark plugs on a 2014 5.3l? I am going to replace mine and would also need the gap size info.

newdude Senior Enthusiast

newdude

Posted
Posted

Owners manual has the part#... 12622441.

 

Plug gap is 0.037–0.043 in. The OEM plugs come pre-gapped (most likely at .040 in).

Crf450r420 Enthusiast

Crf450r420

Posted
Posted

There is a coating on the factory iridium plus you mess up if you gap them so don't

07Softail Senior Enthusiast

07Softail

Posted
Posted

There is a coating on the factory iridium plus you mess up if you gap them so don't

If you gap plugs properly you won't disturb the Iridium on the center and ground electrode. Key is PROPER! And if you don't know how... do some research.

 

RT

Spurshot Senior Enthusiast

Spurshot

Posted
Posted

I'm curious why you are changing plugs. Have you already reached the recommended interval? Or is there a problem?

Crf450r420 Enthusiast

Crf450r420

Posted
Posted

The coating is on the ground strap so there is no way to gap it without messing it up. The Iridium tip lasts because of the metal the coating is so the rest of the plug lasts the 100,000 miles.

07Softail Senior Enthusiast

07Softail

Posted
Posted

The coating is on the ground strap so there is no way to gap it without messing it up. The Iridium tip lasts because of the metal the coating is so the rest of the plug lasts the 100,000 miles.

BS! Let me guess you probably pry between the Ground Strap and The Center electrode if so that is incorrect!!

 

RT

Spurshot Senior Enthusiast

Spurshot

Posted
Posted

I found this on Denso plugs. Couldn't find any specific info on the ACD iridium plugs about gapping them. But the Vette forum guys all gap them.

 

iridium%20gap_zpsc8bygiw3.jpg

07Softail Senior Enthusiast

07Softail

Posted
Posted

I found this on Denso plugs. Couldn't find any specific info on the ACD iridium plugs about gapping them. But the Vette forum guys all gap them.

 

iridium%20gap_zpsc8bygiw3.jpg

Thanks...This is the correct way! I have an Old AC gap tool that has a notch cut out on the end for bending the grounding electrode loose or tight which is the PROPER way of gaping plugs...way before all of these fancy plugs came out.

 

RT

Crf450r420 Enthusiast

Crf450r420

Posted
Posted

I'm going off our GM parts vender, but maybe his years of experiance are wrong. He is good guy and know his shuff, not that he can't be wrong. However he is not with out experiance. Not like GM tells them everything so they all learn it a little at a time.

Spurshot Senior Enthusiast

Spurshot

Posted
Posted

I wouldn't use one of these to open the gap.

 

FISG3PQH3Z3UG9I.LARGE.jpg

 

Nor one of these to close it.

epcp_0210_01_z+jacobs_electronics_spark_

Crf450r420 Enthusiast

Crf450r420

Posted
Posted

I'd love to have one of those jacobs gappers for testing and racing with full straps. The disk is a joke, right?

nadrojcote Senior Enthusiast

nadrojcote

Posted
  • Author
Posted

I have 74,000km and my previous vehicles recommended changining after 100,000. I like to do maintenance before it's recommended. Plus, then I can share my experience with other.

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