Replacement Black Cap for 9437 B Distributor Only

All-new-featuring-a-Magnetic-Pick-up-with-the-Amplifier-attached-to-the-Distributor-for-All-In-One-ease-of-installation.-Features-a-smooth-advance-curve-that-starts-at-1,000RPM-and-has-a-total-of-18-degree-Â @-2,400-RPM-with-10-Â degree-Vacuum-Advance.-Supplied-with-O-Ring-installed.-Requires-a-Bosch-Blue-or-other-hi-energy-coil-(3.4-ohms-primary/12k-ohms-secondary)-with-built-in-resistor.-An-external-ballast-resistor-may-be-used-between-power-source-and-distributor-if-your-coil-does-not-feature-a-built-in-resistor. (SKU: 1694380)