Product Summary

Capacitive Discharge Ignition Box Output, Black

  • It is compatible with 4, 6 and 8-cylinder EFI engines
  • The efficient components use less current to produce more power
  • Features a higher output with 435 primary volts and 95 mJ of spark energy
  • Has a primary voltage of 435 Volts and a secondary voltage of 43,000 Volts
  • You can set an rpm limit on the MSD 6EFI rev limiter with rotary dials in 10rpm increments

Key Specs

MFG. Part #6415
Ignition Box OutputCapacitive Discharge

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MSD 6415 Details

MSD now offers the perfect addition to your MSD Atomic EFI or other aftermarket electronic fuel injection, the 6EFI Ignition Control. The 6EFI is designed to work in harmony with electronic fuel injection systems and comes with detailed wiring instructions making installation a breeze.

Increased throttle response, smoother idle, quicker starts and full ignition power throughout the entire RPM range are all benefits of adding a 6EFI ignition to your fuel injected engine. The ignition offers capacitive discharge technology and will fire a series of multiple sparks that last for 20° of crankshaft rotation when the engine is running at lower rpm.

An adjustable rev limiter will protect the engine in the event of a missed shift or driveline failure. This rpm is adjustable with rotary dials in 100 rpm increments. If you have a 4, 6 or 8-cylinder engine with EFI, the 6EFI will connect and fire it up!


  • Specifically designed for use with EFI systems
  • Detailed instructions for installation with various EFI systems
  • Capacitive discharge technology provides quick starts, smooth idle and full ignition power throughout the RPM range
  • Compact design
  • Built-in rev limiter for over-rev protection
  • Works on 12 volt electrical systems using a distributor
  • Easily connects to magnetic pickup, electronic, and even points distributors
  • EO # D-115-26


  • Spark Energy:  95 mJ per spark 
  • Primary Voltage:  435 Volts 
  • Secondary Voltage:  43,000 Volts 
  • Spark Series Duration:  20 degree Crankshaft Rotation 
  • RPM Range:  15,000 RPM with 14.4 Volts 
  • Voltage Required:  10-18 Volts, Negative Ground
  • Current Draw:  .7 Amp per 1,000 RPM 
  • Weight and Size:  1.5 lbs., 6"L x 3.5"W x 1.75"H 

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


MSD 6415 Specifications

MFG. Part #6415
Ignition Box OutputCapacitive Discharge
Rev Limiter IncludedYes
Data AcquisitionNo
RPM Range15,000 RPM with 14.4 Volts
Timing RetardNone
Coil IncludedNo
Spark Series Duration20° Crankshaft Rotation
Primary Voltage435 Volts output to coil
Secondary Voltage43,000 Volts
Spark Output95 MJ
Voltage Required10-18 Volts
Current Draw0.7 Amp per 1000 RPM
GTIN Code085132064151
Overall Length6.00"
Overall Width3.50"
Overall Height1.75"
Sold in QuantityEach
NotesNot for use with distributorless ignition systems.