These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil; they produce more spark energy while consuming less power without sacrificing voltage output. This means you get hotter spark at the plug to burn the maximum amount of fuel in each cylinder while using less power from your electrical system.

For Hemi combinations currently using Holley EFI or Terminator X, use Smart Coil Ignition Harnesses 558-312 & Coil Extension Harnesses 558-326 for a plug and play solution.

Features:
These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil; they produce more spark energy while consuming less power without sacrificing voltage output. This means you get hotter spark at the plug to burn the maximum amount of fuel in each cylinder while using less power from your electrical system.

For Hemi combinations currently using Holley EFI or Terminator X, use Smart Coil Ignition Harnesses 558-312 & Coil Extension Harnesses 558-326 for a plug and play solution.

More From This Category

AC Delco, Bowtie Linear Wire Looms Chevy Small Block Engines, Chevy Small Block 262 to 400 V8 Engines 1959 to 1986

AC Delco, Bowtie Linear Wire Looms Chevy Small Block Engines, Chevy Small Block 262 to 400 V8 Engines 1959 to 1986

$200.66

MSD Ignition Box, 6-BTM, Analog, Capacitive Discharge, Universal, Points, Electronic, Turbo, Supercharger, Each

MSD Ignition Box, 6-BTM, Analog, Capacitive Discharge, Universal, Points, Electronic, Turbo, Supercharger, Each

$1,467.17

MSD Ignition Coils, Direct Replacement, Coil Pack, Epoxy, Blue, For Ford, For Lincoln, 4.6L/5.4L, SOHC, 2V, Each

MSD Ignition Coils, Direct Replacement, Coil Pack, Epoxy, Blue, For Ford, For Lincoln, 4.6L/5.4L, SOHC, 2V, Each

$110.42