Return to Motorcraft Spark Plug Set - SP-550 Focus ST & RS
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  0 of 0 people found the following review helpful:
 
5 of 5 First Set Since Factory July 29, 2020
Reviewer: Aaron O from medina, WA United States  
This is my first set of spark plugs since my ST left the factory. All plugs are pre-gapped  as promised (between .024 - .025). Mountune is the way to go for OEM replacement plugs.

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5 of 5 Pre-gapped and clean install July 12, 2020
Reviewer: clark vaughn from Mission Viejo, CA United States  


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5 of 5 Definitely the proper spark plugs July 9, 2020
Reviewer: Shane from Huntsville, AL United States  
Car runs better than it has in about 6 months. Tuned cars need to change their spark plugs once a year and I order mine from mountune every year.

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5 of 5 High quality May 31, 2020
Reviewer: Frank Sanchez from Buckeye , AZ United States  
Second time buying them and always pre-gapped to spec.

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5 of 5 Spark Plugs August 26, 2019
Reviewer: Benjamin Hollick from Los Angeles, CA United States  
I needed spark, they make spark.  Sweet.

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5 of 5 May 15, 2019
Reviewer: Peter Goyer from Whitehouse Station, NJ United States  


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5 of 5 April 24, 2019
Reviewer: Anonymous Person from Attleboro, MA United States  


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5 of 5 perfect gap February 5, 2019
Reviewer: Adam Clump from Jerome, AZ United States  
They are OEM plugs that work perfectly fine. The gap was perfect, super easy install

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4 of 5 SP-537 plugs January 20, 2019
Reviewer: Ian Perry from Christchurch, Canterbury New Zealand  
Measured the Gap at over 0.28. Closed the gap up to 0.26 thou and fitted.

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5 of 5 Spark Plugs January 14, 2019
Reviewer: Ed Gomez from Yuba City, CA United States  
Plugs came gapped perfectly. Great Job Mountune..

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