Chevy V8 Marine Certified Distributor Marine Ul-Certified MSD IgnitionBoat 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