15% OFF ORDERS $35+ | 20% OFF $100+ | ONLINE ONLY
USE CODE
MAYMAINT
*
Exclusions apply.
Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Advance Rewards
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Loading...
Share
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product thumb
Product main large
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...

Product Information

Product Details
Part No. 6427
Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)
The 6CT offers all this and more in an epoxy filled, cast aluminum housing to prevent damage to the circuit board. Its rugged build make is ideal to handle the rigors of dirt track racing while its advanced digital control make it reliable for countless laps around the track. It's finished off with a single sealed connector to keep wiring dry and tidy.

Product Features:
  • MSD's smoothest rev limiter yet. Won't upset the chassis and easy on parts
  • Large, easy to read LED display
  • Simple setup of features such as the rev limiter with three rotary dials on the face of the unit
  • Built-in Start Retard adjustable in 0, 10 or 20 increments for quick, easy starts and extend starter life
  • LED displays rev limit, highest RMP turned, cylinder select, start retard, battery voltage and can be set to tach mode
  • Full delivery of spark energy down to 6 volts battery supply
  • Highly efficient, low current draw for extended battery life
  • Rugged built, epoxy filled housing protects the circuit board to stand up to demanding race conditions
  • Single plug-in connector for clean wiring
  • Tamper proof screws to prevent modification of unit
  • Records highest RPM the engine turned for last 20 minutes of run time
  • Works on 4, 6 and 8 cylinder engines
  • Reverse polarity and overheat protection provide ultimate reliability
Specifications
Brand:
MSD

Category:
Ignition

Connector Gender:
Male

Connector Quantity:
1

Current Draw:
0.8 Amps per 1,000 RPM

Features:
Start Retard

Grade Type:
Performance

Height:
1.87 in

Length:
7.89 in

Mount Type:
Surface Mount

Mounting Hardware Included:
Yes

Primary Voltage:
535V w/ Blaster Coil / 550V w/ HVC Coil PN 8250

Product Type:
Ignition

RPM Range:
12,000 RPM

Spark Energy:
135mJ w/ Blaster Coil / 150mJ w/ HVC Coil PN 8250

Sub Category:
Control Modules

Terminal Gender:
Male

Terminal Quantity:
12

Width:
4 in
Loading...
Loading...Loading...Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...
No results
Loading...
Loading...Loading...Loading...Loading...Loading...
Feedback
Be The First To Know About Deals And Promotions.
Plus, create an account to receive $5 off of $20 or more.
TOP REPLACEMENT PARTS
Brake Pads & Shoes
Brake Rotors
Alternators
Water Pumps
Starters
Brake Calipers

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2026 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®