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6423 - MSD 6423 Ultra 6AL Ignition Control Image
MSD

MSD 6423 Ultra 6AL Ignition Control

Part # 6423 Be the first to write a review

Red - Compact design - full MSD power

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MSD 6423 Ultra 6AL Ignition Control

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Est. Ship Date: 09/25/2026

$325.95
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The new Ultra 6AL series delivers full MSD power in a compact, lighter package! The Ultra 6AL Series continues to use a high speed controller that can make extremely quick compensations to the output voltage, multiple spark series, timing and rpm limits while maintaining precise timing and accurate rev limiting. The circuits and controller of the MSD have been thoroughly filtered to create protection against Electro Magnetic Interference (EMI). The Ultra 6AL Series feature a capacitive discharge ignition design. The majority of stock ignition systems are inductive ignitions. In an inductive ignition, the coil must store and step up the voltage to maximum strength in between each firing. At higher rpm, since there is less time to charge the coil to full capacity, the voltage falls short of reaching maximum energy which results in a loss of power or top end miss.

Features:

  • Plug and Play upgrade to current installations. High conversion efficiency ensures minimal heat generation and maximum spark energy output with less current draw from the battery - (Highly efficient Ignition, minimum heat and max spark energy with less cu
  • High RPM operation and maximum output using the Blaster HVC, PN 8252 or HVC II, PN 8253
  • Powerful capacitive discharge of multiple sparks improves performance
  • Consistently high spark energy of 135mJ to 150mJ for every firing, from idle to redline RPM
  • Increase spark series duration lasts for 18 of crankshaft rotation
  • Easily installs on 4, 6, 8-cylinder engines with distributors. Operates on most 7 to 28 volt electrical systems
  • Connects to points, magnetic pickups, and Hall/Crank Input distributors
  • Bluetooth connectivity to Mobile app interface for settings and monitors
  • MSD CAN communication for easy connectivity to MSDView using a CAN MSD Hub and Power Grid USB or CAN-USB Bridge 89982 product
  • Fully protected against an open coil, shorted coil & open load
  • Launch, Burnout, and Step Retard activation inputs available. This ignition box has a built-in tri step RPM rev limit controlled by the mobile app
  • Mobile app available settings: Cylinder selection, Step retard value, Launch RPM value, Burnout RPM value, Max (Race) RPM Value, Start retard value
  • High level of security connection from phone to Ignition box (encryption) including sequence in push button implementation
  • Programmable Step Retard: On Ramp time, Off Delay, Off Ramp Time, Engine RPM for activation. Programmable Start Retard: 0, 10, 20 degrees
  • Compact design full MSD power. Quickens throttle response & improves starting
Brand MSD
ColorRed
Current Draw0.8 Amps per 1,000 RPM
Emission Code4
Product TypeIgnition Controllers
QuantitySold as a Kit
RPM Range15,000 RPM with 14.4 Volts
Size3.3" x 3.8"
Spark Energy135mJ - 150mJ Per Spark
Voltage Required12-15 Volts, 7 Volt Start
WarrantyManufacturer's Limited 1 Year
Weight344 grams
UPC090127145302
Manufacturer Part Number6423
Part Number6423
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Instructions for Part# 6423
Manufacturer's Limited 1 Year: See Details

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