Engineered and produced by an industry-leading manufacturer, this high-power coil delivers an impressive 30,000 volts, typically increasing peak spark voltage by 20% or more. Designed specifically for Single Fire applications, it enhances spark performance, improves starting, eliminates high-speed misfires, increases mileage, and boosts overall performance.

Featuring ION Sense feedback, this coil ensures perfect compatibility with stock Harley EFI ECU systems. It replaces OEM part number 31743-01 and is compatible with EFI DELPHI systems. With a resistance of 0.5 OHM, it's the ideal upgrade for riders seeking to maximize their motorcycle's performance.

Item Specifics:

• Brand Number: 10-2003
• UPC: 191361439452
• Weight: 3.00 lbs
• Package Dimensions: 4.00 x 3.00 x 5.00 inches
• Type: EFI DELPHI
• Replaces OEM: 31743-01
• Features:
  • Increased spark performance
  • Single Fire applications
  • ION Sense feedback for perfect compatibility with stock Harley EFI ECU
  • Engineered and produced by an industry-leading manufacturer
  • High-power 30,000-volt coil typically increases peak spark voltage by 20% or more
  • Improves starting, stops high-speed misfires, increases mileage, and overall performance

Fitment Table:

This HardDrive HD 40V-HP Single Fire Coil Twin Cam EFI is compatible with the following Harley Davidson models:

Note: Also compatible with Softail FLS/S models from 2012 to 2017.