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Product Summary

Universal Fit, Capacitive Discharge Ignition Box Output

  • Features a higher output with 530 primary volts and 135mJ of spark energy
  • Efficient components use less current to produce more power
  • Two rotary dials allow you to set an RPM limit
  • Has the same bolt pattern as the original 6AL, but with a lower profile housing
  • Integrated LED lights for system checks

Key Specs

D-40-43
MFG. Part #6425
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryDigital
CARB EO#

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MSD 6425 Details

The MSD 6AL Ignition Control set the standards that other ignitions strive to reach. In fact, you'll find ignitions from other companies that carry the 6AL name (and in some cases, the same part number). MSD raised the bar even higher with the revised Digital 6AL Ignition Control!

The wiring of the Digital 6AL is routed out one end of the unit through a sealed and locking connector. This eases installation and keeps your wiring looking neat and clean. The rev-limiter of the 6AL is located right on top of the housing for easy access to the two rotary dials to set the limit in 100 rpm increments.

Inside the Digital 6AL, you'll find a microprocessor that monitors and controls every firing and rev limit. The circuits are updated with efficient components that help the ignition produce more power while drawing less current! In fact, the Digital 6AL delivers over 530 volts to the coil with up to 135mJ of spark energy for every firing! Increased output combined with MSD's proven multiple spark series is a win-win situation!

The Digital 6AL is supplied with the wiring harness and the components you'll need for installation. The 6AL is also supplied with vibration mounts. Both ignitions are compatible on 4, 6, or 8-cylinder engines with 12-volt, negative ground electrical systems. They'll accept trigger inputs from breaker points, amplifiers, and magnetic pickups.

Features:

  • High output with 530 volts and 135mJ of spark energy
  • Efficient components use less current to produce more power
  • Set an rpm limit with two rotary dials in 100 rpm increments
  • Built-in LED for system checks
  • All wires exit through a locked, sealed connector
  • Compatible with 4, 6 or 8-cylinder engines

Learn more about determining the proper MSD ignition control box for your application by reading our tech article. MSD Ignition Box: Ignition Controller Buyer's Guide

MSD 6425 Specifications

D-40-43
KEY SPECS
MFG. Part #6425
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryDigital
CARB EO#
GENERAL
Speedway Motors Catalog Part #547-6425
Rev Limiter IncludedYes
Data AcquisitionNo
RPM Range11,000 RPM
Timing RetardNone
Coil IncludedNo
Primary Voltage520-540 Volts output to coil
Secondary Voltage45,000 Volts
Spark Output135-145 mJ per Spark
Voltage Required12-15 Volts, 7 Volt Start
Current Draw0.7 Amp per 1000 RPM
Ignition Box ColorRed
GTIN Code085132064250
Overall Length8.00"
Overall Width4.00"
Overall Height1.88"
ColorRed
Sold in QuantityEach
Emission Code1