Sale

Ignitions and Electrical› Distributors, Magnetos and Crank Triggers

MSD

Early Hemi Chrysler 331 Ready-To-Run Distributor Fits Early Hemi Engines 331, 354. Ready-To-Run Distributors Include A Built-In Ignition Module. No MSD Ignition Control Required. Includes A Built-In Rev Limiter MSD Ignition

$899.95 $824.45 Save $75.50

SKU: M00T 8391

In Stock
In Stock
Ships by Nov 14
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The MSD 8391 Pro-Billet Ready-to-Run Distributor is designed for early Hemi 331 and 354 cubic inch engines. This distributor simplifies wiring, requiring only three connections: one to 12V, one to coil negative, and one to ground. A matching harness with a 3-pin Weathertight connector is included.

Constructed from billet aluminum, this distributor is built for durability. It features a built-in ignition module, eliminating the need for an external ignition control.
Show original supplier description

Part #: 8391

Street rods look great with matching era power plants and the early Hemi engines are a great fit! More rodders are turning to these engines and MSD is excited to offer our Ready-to-Run Distributor to bring their ignitions up to date!Powerful built-in module produces a 7.5 amp single spark through high rpmEasy-to-adjust mechanical advance with supplied springs and stop bushingsSimple and clean installation with only three wires to connectMechanical advance assembly can be locked out for crank trigger systemsPolished steel shaft is QPQ coated and guided by sealed ball bearingsCARB E.O. ApprovedMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeIncludes a built-in Rev Limiter!Vacuum advance canister for improved economy (can be locked out)Supplied with a HEI style distributor cap and rotor (accepts Cap-A-Dapts)Does not require an MSD Ignition ControlDetails:Distributor Cap Included: YesDistributor Type: Ready To RunEmission Code: 1Ignition Box Required: NoIgnition Coil Included: NoIgnition Rotor Included: YesWarranty: Manufacturer's Limited 1 Year Warranty

Features:

  • Simple and clean installation with only three wires to connect
  • CARB E.O. Approved
  • Does not require an MSD Ignition Control
  • Supplied with a HEI style distributor cap and rotor (accepts Cap-A-Dapts)
  • Mechanical advance assembly can be locked out for crank trigger systems
  • Polished steel shaft is QPQ coated and guided by sealed ball bearings
  • Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
  • Powerful built-in module produces a 7.5 amp single spark through high rpm
  • Vacuum advance canister for improved economy (can be locked out)
  • Easy-to-adjust mechanical advance with supplied springs and stop bushings
  • Includes a built-in Rev Limiter!

Fits early Hemi engines 331, 354. Ready-to-run distributors include a built-in ignition module. No MSD Ignition control required. Includes a built-in rev limiter

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.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMSD
Part NumberM00T 8391

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy