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MSD 6421 6AL-2 CDI Ignition Box
MSD 6421 6AL-2 CDI Ignition Box

MSD 6421 6AL-2 CDI Ignition Box

Universal Fit, Capacitive Discharge Ignition Box Output, Rev Limiter Included, Red

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MSD 6421 6AL-2 CDI Ignition Box
MSD 6421 6AL-2 CDI Ignition Box
MSD 6421 6AL-2 CDI Ignition Box
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MSD 6421 6AL-2 CDI Ignition Box
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Part # 5476421
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  • Engineered to accept Hall-effect, points and mag pickup triggers
  • Adjustments can be made via four rotary dials in 100 RPM increments
  • Has an upgraded digital spark output versus the standard 6AL series
  • Includes high end overrev protection plus clutch or transbrake launch limiters
  • The multiple sparks over 20° of crankshaft rotation ensures complete combustion

Details

Ignition Box Output:
Capacitive Discharge
Rev Limiter Included:
Yes
Circuitry:
Digital
Data Acquisition:
No
Timing Retard:
None
Coil Included:
No
Primary Voltage:
535 Volts output to coil
Spark Output:
135 MJ
Voltage Required:
10-18 Volts
GTIN Code:
085132064212
Color:
Red
Notes:
Vibration mounts included.
EO#:
D-722-2

Info

The all new 6AL-2 capacitive discharge ignition will easily connect to nearly any 12-volt negative ground distributor system. Inside the new cast aluminum housing youll find an advanced micro-controller that manages the timing and rpm of the ignition.

  • Upgraded digital spark output versus standard 6AL series
  • Multiple sparks over 20° of crankshaft rotation ensures complete combustion
  • Blast off the starting line with the 2-step rev limiter 
  • High end overrev protection plus clutch or transbrake launch limiters
  • Adjustments made via four rotary dials in 100 RPM increments
  • Accepts Hall-effect, points and mag pickup triggers

Learn more about determining the proper MSD ignition control box for your application by reading our tech article. The Differences Between 6 Series MSD Ignition Control Units.


 

Specs

  • Spark Energy:  135 mJ per spark
  • Primary Voltage:  535 Volts
  • Secondary Voltage:  45,000 Volts
  • Spark Series Duration:  20 degree Crankshaft Rotation
  • RPM Range:  12,500 RPM with 14.4 Volts
  • Voltage Required:  12-18 Volts, Negative Ground
  • Current Draw:  .7 Amp per 1,000 RPM
  • Weight and Size:  3 lbs., 7"L x 4"W x 2"H

Warranties

For warranty information, visit http://www.msdhelp.com/

Charts

547-6421 Instructions (PDF)

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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