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Discussion Starter · #1 ·
SK20HR11 aka 3421 that I found in the car still in good condition. I've read gaps from .028 to .044 in different catalogs. Right now they are about .040. What should they be?
 

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Discussion Starter · #2 ·
If I got Volvo plugs instead, I see two choices. 30650379 for $38 and 30751806 for $58. What is the difference?
 

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R should has .028

Sent from my BBF100-6 using Tapatalk
 

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So the 30650379 for $38 on Amazon are old stock? Any harm in using them to save $20?
As long as you make sure they're the right ones before slapping 'em in the car seems fine to me.
 
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