SKU: 66905282145

MSD Pro-Billet Ready-To-Run Distributor MSD8391

Sale price$679.51 Regular price$755.01
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

MSD Pro-Billet Ready-To-Run Distributor MSD8391Pro Billet Ready To Run DistributorChrysler 331 354 Hemi, Magnetic Pickup, Vacuum Advance, High Output Module Brand: MSD Part Number: MSD8391 Description: Simple and clean installation with only three wires to connect Powerful built in module produces a 7. 5 amp single spark through high rpm Easy to adjust mechanical advance with supplied springs and stop bushings Vacuum advance canister for improved economy (can be locked out) CNC machined billet

Pro-Billet Ready-To-Run DistributorChrysler 331-354 Hemi, Magnetic Pickup, Vacuum Advance, High Output Module
Brand: MSD
Part Number: MSD8391
Description:
  • Simple and clean installation with only three wires to connect
  • Powerful built-in module produces a 7.5 amp single spark through high rpm
  • Easy-to-adjust mechanical advance with supplied springs and stop bushings
  • Vacuum advance canister for improved economy (can be locked out)
  • CNC machined billet aluminium housing and billet aluminium base
  • Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
  • Polished steel shaft is QPQ coated and guided by sealed ball bearings
  • Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
  • Mechanical advance assembly can be locked out for crank trigger systems
  • Advance weight pins are staked and tig welded to the plate
  • Nylon pads ensure smooth operation of the advance weights
  • Supplied with a HEI style distributor cap and rotor (accepts Cap-A-Dapts)
  • Does not require an MSD Ignition Control
  • Now includes built-in Rev Limiter!
  • Note: Recommended coil is MSD8207

MSD's Ready-to-Run Pro-Billet Distributors for Chrysler engines are the perfect upgrade from breaker points or weak electronic ignitions. These distributors feature a maintenance-free magnetic pick-up that accurately triggers the built-in powerful ignition module. This module produces a high-output spark which improves combustion in the cylinder, resulting in quick starts, a smooth idle and great performance. Just beneath the race rotor is a mechanical advance assembly so a timing curve can easily be tailored to match your application. The QPQ coated shaft is guided by a sealed ball bearing assembly for stability and endurance while a vacuum advance canister helps increase economy on those long cruises. The Ready-to-Run Distributors are also a breeze to install. Simply drop it in the engine and connect three wires and you're ready-to-run to your favourite cruise! The front engine mount models are designed in a special small diameter housing to clear aftermarket heads and valve covers. A matching harness with a 3-pin Weathertight connector is supplied.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 66905282145

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4.1 ★★★★★
Based on 24 reviews
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D
Verified Purchase
Dario Montenegro
Lowell, US
★★★★★ 5
Reloj de Calidad
Color: G5885-silver-red
Excelente muy buena Calidad a buen precio lo uso bastante y me preguntan dónde lo compré
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
G
Verified Purchase
GIoang Hoang
Battle Creek, US
★★★★★ 5
4/5
Color: G5885-silver-red
beautiful
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
O
Verified Purchase
oldguy
Alexandria, US
★★★★★ 5
Inexpensive, not cheap, with useful added features
Color: A4 - Blue / Black
First impressions: 1. The watch has features unexpected at this price point: a. Stainless case (claimed) and back b. Glass, not plastic, crystal c. Functioning luminosity (duration to be tested) of hands (not seconds) and 5-minute tics d. Day/date display e. Clear setting instructions in english f. Sweep second hand 2. Packaging was not fancy, but effective; watch arrived in perfect shape with no visible defects: Flat cardboard box in cardboard sleeve with embossed logo, fitted foam box liner, plactic film around watch, protective plactic discs on crystal and stainless back. 3. Overnight delivery via Amazon to my front door (much better than USPS) 4. Faux-croc band looks and feels fine for now 5. Setting mechanisms all worked smoothly 6. The black watch is quite handsome, if not elegant, with a simple, understated blue dial and gold markers; the photos in the listing were a faithful representation 7. I measured the case at a fraction of a mm over 39, the max for my small wrists 8. I observed some nits that are to be expected at this price point: a. Second hand alignment is off by a quarter oFirst impressions: 1. The watch has features unexpected at this price point: a. Stainless case and back b. Glass, not plastic, crystal c. Functioning luminosity (duration to be tested) of hands (not seconds) and 5-minute tics d. Day/date display e. Clear setting instructions in english f. Sweep second hand 2. Packaging was not fancy, but effective; watch arrived in perfect shape with no visible defects: Flat cardboard box with embossed logo, fitted foam liner, plactic film around watch, protective plactic discs on crystal and stainless back. 3. Overnight delivery via Amazon to my front door (much better than USPS) 4. Faux-croc band looks fine 5. Setting mechanisms worked smoothly 6. The black watch is quite handsome, if not elegant, with a simple, understated blue dial and gold markers; the photos in the listing were a faithful representation 7. I measured the case at a fraction of a mm over 39, the max for my small wrists 8. I observed some nits to be expected at this price point: a. Second hand alignment is off by a quarter of a second from second marks b. Black case is excessively shiny; probably is not ion-coated and finish may not be very durable, but was preferable to me over the gold, which I am sure will mar easily c. Watch has a snap-on (not screw-on) back and minimal water resistance Bottom line, I seem to have received exactly what was offered, which is a lot for around $30
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2023
J
Verified Purchase
Jimbo
Boise, US
★★★★★ 5
The watch Is beautiful, keeps time & date well and seems to be made of quality materials
Color: A1 - Blue / Brown
First off I have not had a watch in 20 years since I use my phone for the date and time. I decided to try using one again and love not having to retrieve my phone to check the time. The watch is beautiful and I love the look of the gold with the blue face and brown band. It works great and appears to be of the same quality as the Seiko watches that I use to own. I tested the face and tried to scratch a small area with a sharp object. I would not scratch so it is either glass or a crystal. the metal seems to be of good quality and the band is comfortable and feels like leather. Overall I am happy with it and will update this review if the situation changes.
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Reviewed in the United States on January 12, 2024
D
Verified Purchase
Dennis Stalzer
Lexington, US
★★★★★ 4
Nice looking watch with day and date
Color: A5 - Black
This watch has a nice black face and looks like it is high quality considering the price. I guess time will tell how durable it is. The only thing I am not as pleased about is the band which is stiff and is not as comfortable as another watch that has a leather band.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026

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