Menu

Shop

Garage

Cart

Account

Product Summary

  • Engineered to deliver twice the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life
  • Features a 2:1 improvement over "points" in current fall time for increased coil output
  • Has a rotating cobalt magnets trigger a Hall Effect integrated circuit
  • The epoxy molding makes our module impervious to dirt, oil, grease and moisture
  • Ignitor will trigger most multi-spark CD ignitions

Key Specs

D-57-22
MFG. Part #CU-121
BrandPerTronix
CARB EO#

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy

PerTronix CU-121 Details

For over thirty years, the Ignitor has proven itself in applications ranging from race cars to tractors. The Ignitor replaces breaker points and troublesome factory electronic ignitions with a dependable, self contained and maintenance free electronic ignition system. The Ignitor has been called the "stealth" ignition because of its quick installation and nearly undetectable presence under your distributor cap. There is no "black-box" to clutter the engine compartment. For optimal performance, use the Ignitor with Flame-Thrower 40,000 volt coils. Delivers twice the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life. 2:1 improvement over "points" in current fall time for increased coil output. Rotating cobalt magnets trigger a Hall Effect integrated circuit. No points to burn, no moving parts to wear out. Epoxy molding makes our module impervious to dirt, oil, grease and moisture. Stable timing - no need for any adjustments. Will trigger most multi-spark CD ignitions. Legal in all 50 states and Canada.

  • Delivers twice the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life.
  • 2:1 improvement over "points" in current fall time for increased coil output.
  • Rotating cobalt magnets trigger a Hall Effect integrated circuit . ...no points to burn, ...no moving parts to wear out.
  • Epoxy molding makes our module impervious to dirt, oil, grease and moisture.
  • Stable timing ...no need for any adjustments.

Charts

Warranties

Backed by a 30 month warranty.

PerTronix CU-121 Specifications

D-57-22
KEY SPECS
MFG. Part #CU-121
BrandPerTronix
CARB EO#
GENERAL
Speedway Motors Catalog Part #447-CU121
GTIN Code694342551902