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Holley EFI

Holley EFI LS Spark Plug Wire Set - Cut to Fit

Spark Plug - Cut to Fit- Wire set, Red with Gray 180 degree boots for Holley Smart Coil

Part # 561-115 Be the first to write a review
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Holley EFI Universal "Cut-to-Fit" spark plug wire sets for GM Ls Engines come with the spark plug terminal and boot installed with the Coil end unterminated. Coil cap boots and terminals are included so you can cut the wire to the desired length, then install the terminal.


  • 8mm Plug Wire Size
  • Offers low 350 Ohms per foot resistance while maintaining very high noise suppression
  • Available in three colors (Red ,Black, and Grey)
  • 36" long unterminated wires to allow for custom routing
  • Locking dual crimp style terminals to ensure positive engagement when installing plug wire ends
  • Available with 135 or 180 degree spark plug boot angle

About Holley EFI

Holley is the new standard in EFI! Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever!

ApplicationGM LS
Boot MaterialSilicone
Brand Holley EFI
ColorRed/Gray Boots
Emission Code5
Ohm Resistance/Foot350
Product TypeSpark Plug Wire Set
ResistanceMeets or Exceeds OE
Spark Plug Boot Angle180 Degree
Wire Diameter8.2mm
Wire SeriesHolley EFI Spark Plug Wires
Part Number561-115

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

  • (8) 36" long 8.2mm Spark plug leads
  • (8) Coil Connector Boots
  • (8) crimp connectors
  • (8) heat shrink sleeves
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    Some parts are not legal for use in California or other states with similar regulations.