Free Shipping on Auto Parts Orders Over $75.                           Order by 11 PM EST for Same Day Shipping!

MSD Ignition 6421K - MSD SB/BB-Chevy 6AL-2 Ignition Kit

Easy Kits MSD Ignition 6421K - MSD SB/BB-Chevy 6AL-2 Ignition Kit
MSD Ignition 6421K - MSD SB/BB-Chevy 6AL-2 Ignition Kit

JEGS Part Number: 121-6421K

Digital 6AL-2 Ignition Control Kit
  • Small Block Chevy
  • Big Block Chevy
  • Digital 6AL-2 Ignition Control
  • Pro-Billet Distributor
  • Blaster 2 Coil
  • Coil Mounting Bracket
  • Red Universal 8.5mm Wire Set

    MSD Ignition 6421K Details

    6-Series Digital Ignition Controls

    MSD is excited to announce the next generation of 6-Series ignition controls: the 6AL-2. This all-new ignition control combines a new housing, new digital controls, and more power in a sleek package. Inside the new cast aluminum housing you'll find an advanced micro-controller that manages the timing and RPM of the ignition. The spark output of the new box has been turned up to 535 volts of primary voltage with spark energy reaching up to 135 millijoules! The multiple sparks of the 6AL-2 burn in the cylinder for 20° of crankshaft rotation to ensure complete combustion. Two more great features are the rev limiters: one for high-end overrev protection and another you can activate off a clutch or transbrake to set a launch limit. This feature will help your car blast off the starting line! Adjustments are made via four rotary dials for 100 RPM increment control. Easily connects to nearly any 12-volt negative ground distributor system. Compatible with 4, 6 and 8 cylinder engines.

  • 100 RPM increment control using 4 rotary dials
  • All-new housing and digital circuits
  • Accepts Hall Effect triggers
  • Managed by an efficient digital controller

    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 to 18 volts (negative ground)
  • Current Draw: 0.7 amp per 1000 RPM
  • Size: 7" L x 4" W x 2" H
  • Weight: 3 lbs

    Kit Includes
  • Digital 6AL-2 Ignition Control 121-6421
  • Pro-Billet Distributor 121-85551
  • Blaster 2 Coil 121-8202
  • Coil Mounting Bracket 121-8213
  • Red Universal 8.5mm Wire Set 121-31229
  • Coil Wire 121-84039

  • MSD SB/BB-Chevy 6AL-2 Ignition Kit

    These kits, put together by JEGS Professionals, include MSD Digital 6AL-2, MSD Pro-Billet Distributor, MSD Blaster Coil, MSD Blaster Coil Mounting Bracket, MSD 8.5mm Red Super Conductor Spark Plug Wires and MSD Coil Wire

    MSD Ignition 8467 - MSD Distributor Caps and Rotors
    Only $10.15

    MSD Ignition 8464 - MSD Billet & Pro-Billet Distributors
    Only $15.25

    MSD Ignition 8531 - MSD Distributor Gears
    Only $31.57

    MSD Ignition 8433 - MSD Distributor Caps and Rotors
    Only $36.67

    See All Items You Need