Our Chevrolet front drive distributors brought the need for a distributor plug. Both are billet aluminum and feature a slip collar to ensure correct installation depth. Product Features:Use On Engines w/Wet Sump Oil System And Front Drive Dist.Supplied w/Bronze GearMust Be Used w/An MSD Crank TriggerAdj. slip collar mounting flange for engines w/modified deck hts.O-ring seals can be installed for oil press. control (Mods only)Special oil tract improves lubrication to the dist./cam gearQPQ coated polished steel shaft; guided by sealed ball bearingsOversized Polished Steel Shaft w/QPQ CoatingCNC machined billet aluminum housing