Holley EFI

Holley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition Upgrade

Holley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition Upgrade
Holley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition Upgrade
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Holley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition UpgradeHolley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition Upgrade
Holley EFI

Holley EFI 558-493 Sniper EFI to Dual Sync Distributor Adapter Harness — Universal Ignition Upgrade

SKU: GVMR_558-493
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About Holley EFI Holley EFI engineers high-quality automotive parts and ...Read More

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$49.95
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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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Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Simplify Your Ignition Setup with Holley EFI

The Holley EFI 558-493 adapter harness is the ultimate solution for enthusiasts looking to bridge the gap between Sniper EFI systems and Holley Dual Sync distributors. Designed for precision and reliability, this plug-and-play harness eliminates the guesswork of custom wiring, ensuring your ignition signal remains clean, consistent, and interference-free during high-RPM operation.

Key Features and Benefits

  • Plug-and-Play Installation: Engineered for a direct fit, saving you hours of splicing and troubleshooting.
  • Optimized Signal Integrity: High-quality shielding protects your ignition timing data from electrical noise.
  • Durable Construction: Built with automotive-grade materials to withstand the harsh heat and vibration of the engine bay.
  • Seamless Integration: Specifically designed to allow the Sniper EFI ECU to communicate perfectly with the Dual Sync distributor architecture.

Whether you are building a street machine or a dedicated track car, this harness ensures your engine management system functions at its peak. By maintaining a solid connection between your EFI controller and the distributor, you prevent common timing drift issues and improve overall engine efficiency. Trust the experts at GGCRACING to provide the high-performance wiring solutions your vehicle demands for reliable ignition performance.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Simplify Your Ignition Setup with Holley EFI

The Holley EFI 558-493 adapter harness is the ultimate solution for enthusiasts looking to bridge the gap between Sniper EFI systems and Holley Dual Sync distributors. Designed for precision and reliability, this plug-and-play harness eliminates the guesswork of custom wiring, ensuring your ignition signal remains clean, consistent, and interference-free during high-RPM operation.

Key Features and Benefits

  • Plug-and-Play Installation: Engineered for a direct fit, saving you hours of splicing and troubleshooting.
  • Optimized Signal Integrity: High-quality shielding protects your ignition timing data from electrical noise.
  • Durable Construction: Built with automotive-grade materials to withstand the harsh heat and vibration of the engine bay.
  • Seamless Integration: Specifically designed to allow the Sniper EFI ECU to communicate perfectly with the Dual Sync distributor architecture.

Whether you are building a street machine or a dedicated track car, this harness ensures your engine management system functions at its peak. By maintaining a solid connection between your EFI controller and the distributor, you prevent common timing drift issues and improve overall engine efficiency. Trust the experts at GGCRACING to provide the high-performance wiring solutions your vehicle demands for reliable ignition performance.

Product Details

Product Description

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Simplify Your Ignition Setup with Holley EFI

The Holley EFI 558-493 adapter harness is the ultimate solution for enthusiasts looking to bridge the gap between Sniper EFI systems and Holley Dual Sync distributors. Designed for precision and reliability, this plug-and-play harness eliminates the guesswork of custom wiring, ensuring your ignition signal remains clean, consistent, and interference-free during high-RPM operation.

Key Features and Benefits

  • Plug-and-Play Installation: Engineered for a direct fit, saving you hours of splicing and troubleshooting.
  • Optimized Signal Integrity: High-quality shielding protects your ignition timing data from electrical noise.
  • Durable Construction: Built with automotive-grade materials to withstand the harsh heat and vibration of the engine bay.
  • Seamless Integration: Specifically designed to allow the Sniper EFI ECU to communicate perfectly with the Dual Sync distributor architecture.

Whether you are building a street machine or a dedicated track car, this harness ensures your engine management system functions at its peak. By maintaining a solid connection between your EFI controller and the distributor, you prevent common timing drift issues and improve overall engine efficiency. Trust the experts at GGCRACING to provide the high-performance wiring solutions your vehicle demands for reliable ignition performance.

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