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Ignitions and Electrical Distributors, Magnetos and Crank Triggers

MSD

Pro Mag 12 Amp Generator, Chevy V8, Tall Supplied With A Cap, Rotor, Wire Retainer, Bronze Gear And A Billet Hold-Down Clamp MSD Ignition

$4,106.95 $3,599.95 Save $507.00

SKU: M00T 8139MSD

In Stock
In Stock
Ships by Sep 17
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The MSD Pro Mag 12 Amp Generator, part #8139MSD, is designed for Chevy V8 engines with taller deck heights. It features an adjustable slip collar for cam gear alignment. This part is for 'Racing Use Only Vehicles' and is not legal for sale or use on emissions-controlled vehicles.
Show original supplier description

Part #: 8139MSD

Two taller, one-piece housings are available for Chevrolet engine blocks with taller deck heights. Each generator features an adjustable slip collar that provides easy adjustment of the magneto and cam gear alignment. This is critical for engines with varying deck heights, custom heads and modified intakes.Details:Amperage Rating: 12 AMPEmission Code: 4

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

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Specifications

BrandMSD
Part NumberM00T 8139MSD

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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.

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.

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