Thread: What spark plugs? 380bhp Saph
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Old May 20, 2016 | 01:15 PM
  #6  
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Guinnless
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From: Lancashire
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The AR3932 look like taper seat plugsto me. The AR3933 do look to be the correct heat range though for a Stage 3.

I ran my stage 3 on IK27s for thousands of miles without an issue until they eventually wore out.
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