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Early Access Omc 503754 Gm 5.0l-8.2l 8 Cyl Magforce Est Electronic Ignition Premium Marine Spark Plug Wire Set Sierra 18-8820-1 Quality Assured [CQfNgbc1]

$23.99 $76.99 -69%

OMC GM 5.0L-8.2L 8 Cyl MagForce EST Electronic Ignition Premium Marine Spark Plug Wire Set Lead Lengths:Lead Lengths: 2 Spark Wires 27"Lead Lengths: 1 Spark Wire 32"Lead Lengths: 2 Spark Wires 38"Lead Lengths: 3 Spark Wires 42"Lead Lengths: 1 Coil Wi

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Early Access Omc 503754 Gm 5.0l-8.2l 8 Cyl Magforce Est Electronic Ignition Premium Marine Spark Plug Wire Set Sierra 18-8820-1 Quality Assured [CQfNgbc1]

  • OMC GM 5.0L-8.2L 8 Cyl MagForce EST Electronic Ignition Premium Marine Spark Plug Wire Set 
  • Lead Lengths:
    • Lead Lengths: 2 Spark Wires 27"
    • Lead Lengths: 1 Spark Wire 32"
    • Lead Lengths: 2 Spark Wires 38"
    • Lead Lengths: 3 Spark Wires 42"
    • Lead Lengths: 1 Coil Wire 14"
  • Kevlar core for maximum durability and long life
  • Durable stainless steel wound conductor for maximum horsepower and engine performance
  • Premium silicone jacketing and boots for the ultimate in high temperature protection
  • Superior RFI suppression for the most sensitive electronic system
  • Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
  • Ignition Type: EST Electronic
  • High Performance
  • Suppression Spiral Core
  • SAE J2031
  • For use with:
    • GM 305, 350, 454 (5.0L, 5.7L, 7.4L, 8.2L) 302, 351 (5.0L, 5.8L) V8
  • Manufacturer: Sierra 
  • Model Number: MagForce Ignition Wire
  • Part Number: 18-8820-1
  • Also Known As: 
    • Mallory 9-28029
    • OMC 503754

What Our Customers Say

January 28, 2026

Absolutely no complaints!

The quality is apparent immediately.

- Wyatt R..

January 28, 2026

Absolutely no complaints!

High quality and operates flawlessly.

- Cody B..

January 28, 2026

Absolutely no complaints!

I'm so happy. It's a great product.

- Darlene K..

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