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10mm/14mm Spark Plug Thread Chaser - 66033 view this item at harborfreight.com »

Ratings: (5 is best)

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Review by Bigplanz on January 30th, 2010
Worked really well for my 3.1L V-6. One spark plug hole was a little tricky to get to, but not too bad. This cleans out the hole, not repair the threads. This is particularly important for spark plugs, since they have to be torqued to spec and you HAVE to use anti-seize compound on the threads. With out cleaning the threads, you'll end up with badly torqued and hard to remove spark plugs, or, worse, cross threaded plugs.
Review by gkring on September 18th, 2009
ok if you have the clearance to use it. Chances are if you messed up a thread this won't save you, but cheaper than buying a real tap and worth a shot.

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