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Ignitions and Electrical› Ignition Boxes and Components

MSD

Digital 6AL Ignition Box

Name: Digital 6AL Ignition Box
Brand: MSD
SKU: R6425

$364.95 $347.26 Save $17.69

SKU: R6425

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Overview

The MSD Digital 6AL ignition control box is a performance ignition unit featuring a microprocessor that monitors and controls engine firing and rev limits. It delivers over 530 volts to the coil and up to 135mJ of spark energy, utilizing MSD's proven multiple spark discharge technology to improve efficiency and power output.

Show original supplier description

The MSD Digital 6AL ignition control box provides precise ignition management for high-performance engines, utilizing a high-speed microprocessor to analyze inputs and optimize spark output. This unit is designed to replace stock ignition systems, helping to improve idle quality and throttle response by delivering up to 530 volts and 135mJ of spark energy to the coil for every firing event. Constructed for durability and ease of installation, the system features a sealed and locking connector where all wiring exits to keep the engine bay clean. It is compatible with 4, 6, or 8-cylinder engines using 12-volt, negative ground electrical systems and accepts trigger inputs from breaker points, amplifiers, and magnetic pickups. The unit includes vibration mounts to protect internal electronics from harsh engine conditions. The system features a built-in rev-limiter, which is adjustable via two rotary dials located on top of the housing for 100 RPM increments. The unit is legal for sale and use on emissions-controlled vehicles across all 50 states and holds a C.A.R.B. Executive Order number (D-40-43). Please note that some applications may require the use of an optional MSD tach adapter (sold separately) for proper instrument operation.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	MSD
Part Number	R6425
Category	Ignitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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