Jump to content

Which Replacement Spark Plugs

Recommended Posts

I am replacing the spark plugs on my GTH at 30,000 miles due to the breakage problems they have. Which ones would you use for a stock street motor? The Champion and Brisk are one piece, but the Motorcraft sp 514 is suppose to be improved. which would you use. Thanks Harley

Link to comment
Share on other sites

I changed mine with the one piece Champion 7989. They cost a crap load more but I am not worried about the breakage issue. I also used anti-seize in the "neck" that extends down into the head. Keep any anti-seize off the electrode. Just smear it lightly on the extension.


Good luck and take your time!

Link to comment
Share on other sites

  • 1 year later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...