Aeromotive 4 Pin OEM Adapter - Gray FRDM1104-AB Features:Designed for street/performance use with

Aeromotive 4 Pin OEM Adapter Gray FRDM1104 AB Features:Designed for street performance use with Features:Designed for street performance use with a mechanical and vacuum advanceMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap A Dapts)Polished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy to adjust mechanical advance with supplied springs and stop bushingsVacuum advance canister for improved economy (can be locked out)CARB E safely stopping the engine