Pro-Billet Marine Distributors
Marine environments place rigorous demands on every component of the ignition system, especially the distributor. The combination of water spray, salt exposure, full throttle acceleration and harsh vibrations all take their toll. Recognizing the need for a true performance distributor, MSD engineers developed the Pro-Billet Marine Distributor. The MSD Pro-Billet Distributors are the strongest and most accurate distributor you can put in your boat. The housing is CNC machined from a billet of 6061-T6 aluminum creating a housing with no porosity or weak areas. Internally, a Tuftride coated steel shaft is guided by a sealed ball bearing and an extra long sintered bushing for high speed stability and endurance. Each distributor uses MSD's race proven magnetic pickup to trigger the ignition control. The pickup receives its signal through a precision manufactured reluctor that is attached to the shaft. The mechanical advance assembly receives a QPQ plating for long lasting resistance to corrosion in marine environments.
The mechanical advance assembly is easily adjustable so you can dial-in an ignition curve to match your boat's application. Three additional sets of advance springs and stop bushings are included with detailed instructions making adjustments easy to perform and understand. For marine use, the distributor cap is bolted and sealed to the aluminum base. There are two flame arrestor holes with brass screens machined into the base of the distributor to prevent ignition of gas fumes that may build up in the engine compartment.
A special Weathertight Connector is supplied to provide a positive-lock and water resistant connection. This heavy duty connector will withstand high temperatures and water, and plugs directly into the MSD 6M-2 or 7M-2 Ignition.
Each wire is housed in a separate "barrel" and is sealed with a special ribbed seal, then held in place by a locking mechanism keeping the wires connected and elements out. Each Pro-Billet Marine Distributor features two flame arrestor holes with brass screens. This prevents the ignition of gas fumes that may build up in the engine compartment.
The distributors are available for Chevrolet and Ford automotive style V8 engines and come complete with a high quality, bolt down alkyd cap and MSD's Racing Rotor. The Marine Pro-Billet Distributors have been tested by the Underwriter's Laboratory and are certified to meet or exceed safety standards for marine ignition systems as set by the U.S. Coast Guard.

Marine Pro-Billet

V8 Chevy - PN 8560
V8 Chevy, w/Adjustable Slip Collar - PN 8562
V8 Ford, 351C, 351M, 400, 429, 460 - PN 85806
Late Model GM, EFI-PN 8366