Spark Plugs

[AustinM64]

Hi There,

I have a 2006 model (Registered Dec 2005) Chrysler Grand Voyager 3.3L V6. I have brought some new Autolite AP5426 spark plus. I have removed NGK Iridium plugs. 

As you can see from the listing from eBay below, the Autolite ones appear to be correct but......... when I checked them before I bolted the heads back on, they appear to be longer than the Iridium ones to the point where one protrudes, fractionally, below the the head/into the bore. I've replace the head gasket and had the Heads skimmed.

"6 x SPARK PLUG PLATINUM AUTOLITE AP5426 - CHRYSLER VOYAGER 3.3L 3.8L 01-07"

Anyone else had this issue? Are the Autolite ones good to use? Should I be sticking with the Iridium plugs?

Cheers

Austin

[bignev]

They are listed as an option on the rockauto site so should be fine.

 

On a mechanical point, as long as the plug thread doesn't protrude in past the head they shouldn't be a problem. If it does then after a while, when there is carbon build up on the tread, removing the plugs could damage the thread in the head.