Spark Plug Wire Set - 300+ Ferro-Spiral - Universal Fit - 10.8mm - Yellow

This universal fit spark plug wire set includes our 300+ Ferro-spiral core 10.8mm Yellow wire with multi-angle boots.

PART# 10840

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These ACCEL 300+ Ultra Race wire sets are custom tailored for race engines and their builders. The oversize 8.8 mm wire is rated for 600 degrees F and 60kV. Resists heat, chemicals and moisture. High density insulation eliminates arcing.


  • 150 ohms per foot
  • Ferro-Spiral core suppresses RFI/EMI


Boot MaterialSilicone
Boot Temperature RatingMeets or Exceeds OE
Emission Code1
Product TypeSpark Plug Wires
Resistance150 Ohms per foot
Spark Plug Boot AngleVari-angle
WarrantyLimited 90 Day Warranty
Wire Diameter10.8mm
Wire Series300+
Wire Temp Rating550 Degree
Part Number10840


This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
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