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#54785603
MSD 85603 Chevy V8 Marine Certified Distributor-Black
Red
$583.95
/each
Factory Shipped
$649.95
Save $66.00
Quantity
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Product Summary
HEI / Male Cap Type, Mechanical Advance Type
Rebates Available
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Return PolicyMSD 85603 Details
MSD 85603 Details
Boat enthusiast will be glad to see the addition of the new MSD Black Marine distributor line. Built off our tried and true billet marine distributors, the 6061-T6 aluminum housing is now hard anodized with a sleek black finish for great looks.Under the black cap you'll find a quality rotor, pickup, reluctor and adjustable weight plate assembly (where applicable). Chevy applications use a .500" QPQ coated distributor shaft joined by a melonized distributor gear while Ford models run a .531" QPQ coated shaft and cast gear. Both ensure smooth operation, superior strength and long life even when challenged by harsh marine applications.The Marine Pro-Billet Distributors have been tested by Underwriter's Laboratory and are certified to meet or exceed safety standards for marine ignition systems as set by the U.S. Coast Guard.
Features:
Rebates
Holley Fuel Up Spring Savings Event 2026

Save 10% instantly on select products across the Holley family of performance brands during the annual Holley Fuel Up Spring Savings Event 2026. Instant rebate period runs from March 30, 2026 through April 19, 2026.
Guides & Documents
CARB Warning
For use on pre-1966 vehicles only
CARB Warning
For use on pre-1966 vehicles only
MSD 85603 Specifications
MSD 85603 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 85603 |
| Brand | MSD |
| Cap Type | HEI / Male |
| Advance Type | Mechanical |
| GENERAL | |
| Trigger Style | Magnetic |
| GTIN Code | 085132856039 |

