Engine Kits

MSD 6201 85551 Combination 6A box with Pro Billet Distributor
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MSD 6201 85551 Combination 6A box with Pro Billet Distributor

Part #: MSD100
List Price: $925.98
Our Price: $462.99
You Save: $462.99

Availability: In Stock

Combo Deal

Northern Auto has combined 2 popular SBC MSD pieces that work perfectly together.  The 6a MSD Digital  Ignition Box and the Non-Vacuum Advance Pro-Billet Chevrolet V8 Distributor. This is MSD's most popular performance distributor!

Chevy V8, Non-Vacuum Advance Pro-Billet Chevrolet V8

Distributor Features: Chevy V8, Non-Vacuum Advance Pro-Billet Chevrolet V8 This is MSD's most popular performance distributor! The MSD Ignition 85551 housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. Modified blocks can also take advantage of the O-ring seals to help maintain proper pressure.

For high rpm stability, a .500" steel shaft is supported by a sealed ball bearing and a long sintered bushing. This MSD Ignition 85551shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pickup mounted in the housing.

This high output magnetic pickup is the most accurate way to trigger your MSD Ignition 85551 ignition. Plus, with no moving parts to wear or adjust, the pickup is maintenance-free! Just above the pickup is MSD's adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application.

NOTE: MSD Ignition 85551 Must be used with an MSD 6, 7, 8 or 10 Series Ignition. Supplied with a Cap and Rotor.

MSD 6A box features:  The MSD 6A Ignition Control set the standards that other ignitions strive to reach. For 2011, the bar has been raised even higher as we introduce the all new Digital 6A ignition Control!


  • Higher output with 530 primary volts and 135mJ of spark energy
  • Efficient components use less current to produce more power
  • Same bolt pattern as the original 6AL with a lower profile housing
  • Built-in LED for system checks
  • All wires exit the same side through a locked, sealed connector
  • Compatible for 4, 6 or 8-cylinder engines

MSD started with a clean slate and drew up plans for an all new housing. We kept the same footprint as the traditional 6AL but lowered the profile for a sleek look. The wiring is all routed out one end of the unit through a sealed and locking connector. This eases installation and keeps your wiring looking neat and clean.

Inside the Digital 6A you’ll find a microprocessor that monitors and controls every firing. The circuits are updated with efficient components that help the ignition produce more power while drawing less current! In fact, the new Digital 6A deliver 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!

For Street Distributor and box, check out MSD500 or MSD600

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