MSD Ultra 6A Ignition Control - Black

Compact design - full MSD power.

Part # 62023 Be the first to write a review
Estimated Ship Date: 12/16/2022
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This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

See Emissions Details
The Ultra 6A 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 6A 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.


  • Plug and Play upgrade to current installations with a 6201, MSD 6A
  • New processor and board design provide a highly efficient ignition, minimal heat and max spark energy with less current draw
  • 60% smaller and 50% lighter than the MSD Digital 6A (688 grams vs 344 grams)
  • 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, and ensure complete combustion
  • Consistently high spark energy of 135mJ to 150mJ for every firing, from idle to redline rpm
  • Easily installs on 4, 6, 8-cylinder engines with distributors
  • Operates on most 7 to 28-volt electrical systems
  • Connects to points and magnetic pickups
  • Fully protected against an open coil, shorted coil & open load
  • Compact design - full MSD power
  • Quickens throttle response & improves starting
  • Tach Output to drive an external Tachometer

About MSD

From small block street cruisers to 10000 horsepower top fuel dragsters, MSD's ignition systems has been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.

Brand MSD
Current Draw1.1 Amp per 1,000 RPM
Emission Code3
FeaturesNo Rev Limiter
Primary Voltage520-540 Volts
Product TypeDigital 6A Ignition Control Box
RPM Range15,000 RPM with 14.4 Volts
Secondary Voltage45,000 Volts
Spark Energy135mJ - 150mJ Per Spark
Voltage Required12-15 Volts, 7 Volt Start
WarrantyLimited 1 Year Warranty
Weight and Size3.3" x 3.8" - 344 grams
Part Number62023

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

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

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
CARB EO: D-40-43
Limited 1 Year Warranty: See Details

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    Some parts are not legal for use in California or other states with similar regulations.