Holley
Holley 558-117 Universal MPFI Coil On Plug Main Harness
Holley 558-117 Universal MPFI Coil On Plug Main Harness
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Holley 558-117 Universal MPFI Coil On Plug Main HarnessHolley 558-117 Universal MPFI Coil On Plug Main Harness
Holley

Holley 558-117 Universal MPFI Coil On Plug Main Harness

SKU: BBVL_558-117

About Holley Holley is the legendary American carburetor and fuel-injection ...Read more

Price:
$560.95
5600 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Watch in action

Holley 558-117 Universal MPFI Coil-On-Plug Main Harness

Achieve precise ignition control with the Holley 558-117 Universal MPFI Coil-On-Plug (COP) Main Harness. This versatile harness is designed to facilitate the integration of modern coil-on-plug ignition systems into a wide range of applications, offering flexibility and reliability.

Product Highlights:

  • Universal Application: Ideal for custom builds and retrofits where a universal solution is needed for MPFI and COP systems.
  • Coil-On-Plug Ready: Specifically designed to connect individual coils directly to the spark plugs for improved spark energy and efficiency.
  • High-Quality Construction: Manufactured with durable materials to ensure longevity and resistance to engine bay heat and vibration.
  • Simplified Wiring: Streamlines the process of installing a COP ignition system, reducing complexity and potential error.
  • Enhanced Performance: Supports a cleaner burn, better fuel economy, and increased horsepower potential by providing a strong, consistent spark.

Whether you're building a custom hot rod, restomodding a classic, or upgrading a performance vehicle, the Holley 558-117 harness provides the foundation for a superior ignition setup. Trust Holley's expertise for your wiring needs. Find the Holley 558-117 Universal MPFI Coil-On-Plug Main Harness at GGCRACING.

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Watch in action

Holley 558-117 Universal MPFI Coil-On-Plug Main Harness

Achieve precise ignition control with the Holley 558-117 Universal MPFI Coil-On-Plug (COP) Main Harness. This versatile harness is designed to facilitate the integration of modern coil-on-plug ignition systems into a wide range of applications, offering flexibility and reliability.

Product Highlights:

  • Universal Application: Ideal for custom builds and retrofits where a universal solution is needed for MPFI and COP systems.
  • Coil-On-Plug Ready: Specifically designed to connect individual coils directly to the spark plugs for improved spark energy and efficiency.
  • High-Quality Construction: Manufactured with durable materials to ensure longevity and resistance to engine bay heat and vibration.
  • Simplified Wiring: Streamlines the process of installing a COP ignition system, reducing complexity and potential error.
  • Enhanced Performance: Supports a cleaner burn, better fuel economy, and increased horsepower potential by providing a strong, consistent spark.

Whether you're building a custom hot rod, restomodding a classic, or upgrading a performance vehicle, the Holley 558-117 harness provides the foundation for a superior ignition setup. Trust Holley's expertise for your wiring needs. Find the Holley 558-117 Universal MPFI Coil-On-Plug Main Harness at GGCRACING.

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