Harley Road King Performance Spark Plugs Pair repl. OEM# 6R12
$
10.99
Score By Feature
Based on 39 ratings
Value for money
7.36
Mileage
6.06
OveReview Final Score
How Our Score Is Calculated
Product Description
The most popular style of spark plugs, available from OEMs in a variety of
The black ceramic body of the plugs gives them a unique appearance
The high-performance insulation, which is made of highly pure alumina, is highly resistant to heat shock while providing excellent thermal
Each pair is sold separately
The Harley Road King Twin Cam 2000 and newer
Questions & Answers
Is there a reason for its failure? Having to dig out half the spark plug from the cylinder was a challenge for me. ?
The screw was probably overtightened or cross-threaded when it was
Selected User Reviews For Harley Road King Performance Spark Plugs Pair repl. OEM# 6R12
It didn't last
3/5
There were no survivors. After I cleaned them, one broke while I was putting them back. My favorite thing about this plug was its design. Finished off my 2005 Roadking with this.
Kimber Underwood
| Mar 30, 2021
The good news is
4/5
I like it.
Josue O’SULLIVAN
| Jan 29, 2021
I am headinglune
4/5
I replaced it for maintenance and it still doesn't have any running issues. Nevertheless, it won't be possible to grade spark plugs after a few weeks or a couple hundred miles. If it's up to me, I'd recommend sticking to OEM. The reading wasn't as close as I would have liked, but so far,.
Gabriella Hull
| Nov 20, 2020
This is a 4-Star rating
4/5
I was very satisfied with how it worked.
Nalani Salazar
| Jan 23, 2021