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MSD 6430 Extreme Duty 6ALN CDI Ignition Control

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MSD 6430 Extreme Duty 6ALN CDI Ignition Control

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Q & A

What's in the Box

Orignally designed with NASCAR in mind, the 6ALN cd ingnition control box is equipped with the mandatory 6-Pin Weathertight connector to meet NASCAR's ignition wiring rule, 20-6.1. Plus, a special clear base plate is also installed for easy tech inspection.

The 6ALN has a built-in Rev Control.  These rev controls are adjustable with plug-in modules and will save your engine from over-rev damage caused by missed shifts or driveline failure.

547-6430 Instructions (PDF)

547-6430 Supplement (PDF)

MSD Rebate (Link)



  • Multiple spark, capacitive discharge ignition control
  • Designed for circle track racing with NASCAR mandated connectors and clear epoxy potting compound for vibration protection
  • 6-pin Weathertight connector, mandatory for NASCAR use
  • Circuit board is encased in a clear two part silicone elastomer
  • Clear plastic base plate for easy tech inspection
  • Built-in Soft Touch Rev Control is adjustable with RPM Modules
  • Multiple sparks for 20 degrees of crankshaft rotation
  • Works on 12 - 18 volt electrical system
  • Accepts breaker points, amplifier and magnetic pickup trigger inputs
  • 470 primary voltage output to coil
  • 110 millijoules per spark up to 15,000 RPM
  • Programmable for 4, 6, or 8-cylinders by cutting red/blue wire loops
  • Supplied with rubber shock mounts
  • Supplied with 3,000, 6,000, 7,000 & 8,000 RPM Modules

Customer Reviews

Rated 4 out of 5 by 1 reviewers.
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Verified Purchaser
Product Rating


October 05, 2014
MSD is a great company and this box is the to use.. no matter what your use. street or racing. 6aln is the way to go
Yes, I recommend this product.
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MSD Rebate (Link)