Used Distributor Cap 1984–2019

The distributor cap routes high-voltage spark from the ignition coil to each spark plug wire in the correct firing order. The rotor inside the cap spins and makes contact with each terminal in sequence as the engine turns. These caps are used on vehicles with distributor-based ignition systems, which were standard through the mid-1990s and into the 2000s on some engines. Carbon tracking, cracked housing, corroded terminals, and a worn center carbon button are common failure modes. A bad cap causes hard starting, misfires at idle and under load, and rough running. Carbon tracking -- where high voltage arcs across the cap surface to ground instead of going to the plug wire -- is a common cause of intermittent misfires that are hard to diagnose without removing the cap. Redline lists 13 Distributor Cap from 5 verified sellers covering 9 makes including Chevrolet, Honda, Lexus, Infiniti, Mercedes Benz. Caps and rotors are typically replaced together as a set. Filter by year, make, and model to find the correct cap with the right number of terminals and bolt pattern.