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MSD Ignition Digital 6-Plus Ignition Control Box

MSD Ignition 6520

121-6520

made in usa
MSD Ignition Digital 6-Plus Ignition Control Box $385.95
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Estimated to ship directly from the manufacturer on 10/22/18
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MSD Ignition 6AL-2 Programmable Ignition Control
MSD Ignition 121-6530
$403.95
View Details
Digital 6-Plus Ignition Control
  • Per Spark Energy: 135 mJ
  • Built-in 2 Step Rev Limiter
    (One Stage of Retard and Start Retard)
  • CARB E.O Number D-40-31
  • Red

  • MSD Ignition 6520 Details

    6-Series Digital Ignition Controls

    The MSD Digital 6-Plus Ignition Control combines terrific power, digital accuracy, and great accessories making it ideal for street/strip applications. Every spark of the Digital 6-Plus Ignition is packed with 135 millijoules of spark energy and 535 primary volts. When used with the MSD Blaster HVC Coil (121-8252), a spark with over 300 milliamps burns across the plug gap for 400 microseconds. Below 3,300 RPM the Digital 6-Plus produces a series of sparks that burns in the cylinder for up to 20° of crankshaft rotation. This incredible heat ensures combustion to produce great power, quick throttle response, smooth idle, and fast starts.

    Highlights
  • Switch between two rev limits that adjust with rotary switches in 100 RPM increments
  • Single-stage retard for nitrous and top end performance
  • Start retard eases pressure on the starter, flywheel, and engine
  • Adjustable magnetic pickup compensation produces accurate trigger signals
  • LED display warns of trigger signal problems or faulty charging system
  • Fully potted with polyurethane for vibration and water protection
  • Non-OBDII approved via CARB EO #D-40-31
  • 50 State Legal

    Operating Specifications
  • Spark Energy: 135 mJ per spark
  • Primary Voltage: 535 volts
  • Secondary Voltage: 45,000 volts (Tested with blaster HVC II coil)
  • Spark Series Duration: 20° Crankshaft Rotation
  • RPM Range: 12,000 RPM with 14.4 volts
  • Voltage Required: 12-18 volts (negative ground)
  • Current Draw: 0.7 amp per 1,000 RPM
  • Size: 8.5" L x 4.5" W x 2.2" H
  • Weight: 3.7 lbs




  • Specifications:

    Height (in.)
    2.25
    Width (in.)
    4.5
    Overall Length (in.)
    8.5
    RPM
    12,500
    CARB EO Number
    D-40-31 (pdf)
    CD Voltage Output to Coil
    535 V
    Circuitry
    Digital
    Coil Included
    No
    Current Draw
    7.4 amps at 10,000 rpm
    Data Acquisition
    No
    Ignition Box Color
    Red
    Ignition Box Output
    Capacitive discharge
    Maximum Operating Voltage
    18 V
    Minimum Operating Voltage
    7 V
    Quantity
    Sold individually
    Rev Limiter
    Yes
    Spark Output (millijoules)
    135 Millijoules
    Timing Retard
    One-stage
    Warranty
    1-year
    Manufacturer's Part Number:
    6520

    MSD 6-Series Ignitions set the standard for quick starts, increased power, smooth idle, crisp throttle response and reduced spark plug fouling. MSD ignitions are available in a several styles and install easily in a variety of applications.

    Digital 6A: Base model with multiple sparking, capacitive discharge (CD) ignition control.
  • Hotter Spark for Improved Driveability.
  • Without Rev Limiter - Can Not Be Added.

    Digital 6AL: Digital 6AL or 6BTM Ignitions are made for spirited driving, grabbing gears or some form of racing.
  • Includes Adjustable Soft Touch Rev Control.
  • Can Add a 2-Step Module Selector for Launch rpm Limit.

    Digital 6AL-2: Ideal for the street and strip applications.
  • Includes Built-in 2-Step Rev Control.

    Digital 6 Plus: Ideal for 4, 6 and 8-cylinder engine applications.
  • Includes Built-in Drag Race Features, 2-Step Rev Control, Single Stage Retard and Start Retard.

    Programmable 6AL-2: Provides PC programming for the street.

    Extreme Duty 6ALN: For severe duty applications such as off-road truck racing or saturday night dirt tracks.
  • Sealed locking connectors and epoxy for vibration resistance create an ignition ready to take on the rigors of hard-core racing.

    Hardcore 6CT: The most advanced ignition for circle track racing.
  • This ignition contains MSD’s smoothest rev limiter available and is ready to take on the rigors of hard-core racing.

    Marine: All of the power and multiple. sparks of an MSD, plus a rev limiter for Marine applications.
  • Includes sealed Weathertight connectors.

    Professional Racing: Designed for professional long duration, high-rpm racing.
  • Features NASCAR mandated harnesses, a clear baseplate and vibration dampening silicone.
  • Uses a special Coil (121-8250) & produces higher spark energy and voltage.

    JEGS Easy Kits are designed by JEGS professionals to help you get all the performance parts you need.

  • 6520 is rated 4.0 out of 5 by 2.
    Rated 4 out of 5 by from Excellent feature for Nitrous system Haven't installed it yet recommend by friend for my engine build running single stage nitrous system.
    Date published: 2016-01-11
    Rated 4 out of 5 by from Nice features and easy install Installed a few weeks, nice features and quick and easy install only reason for 4star is that I wish I'd went ahead and bought the programable 6 since the prices are so close.
    Date published: 2015-12-09
    • y_2018, m_10, d_16, h_21
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    can i use a 8251 coil

    Asked by: bobbyjob69
    The 8251 coil is not compatible with this box.
    Answered by: Jon Jegs Tech
    Date published: 2018-02-16
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