Overview 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. | 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. | 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. Marine UL-Certified Features Weathertight connectors are used for locked and sealed connections UL Approved Supplied with a bolt down HEI style distributor cap and rotor O-ring seals can be added to modified blocks to improve oil pressure control Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range Nylon pads ensure smooth operation of the advance weights Designed for use in marine applications with Chevy V8 automotive engines CNC machined billet aluminum housing and billet aluminum base with two flame arrestor holes with brass screens Special oil tract improves lubrication to the distributor and cam gear Black anodized for great looks and corrosion resistance Mechanical advance assembly can be locked out for crank trigger systems Advance weight pins are staked and tig welded to the plate Will not accept a vacuum advance canister Polished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushing Easy-to-adjust mechanical advance with supplied springs and stop bushings Must be used with an MSD Ignition Control Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
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