Standard Ignition Distributor Cap P/N:JH-88
Send high-voltage spark to every cylinder with the Standard Ignition Distributor Cap JH-139. It drops in as a direct-fit replacement for the 1988-1991 Mazda 929 (V6-3.0L) and the 1992-1995 Mazda MPV (V6-3.0L), carrying the current from the distributor rotor out to each spark plug wire so the ignition system keeps firing in the proper order.
The rotor, spark plug wires, gaskets, and mounting screws are not included — reuse or replace these as directed by the vehicle service procedure. If a cracked, carbon-tracked, or corroded original cap is the cause of a misfire, this replaces it. Country of origin: Japan.
Interchange: C691 · CAPB10448 · JP952 · EP813 · 12353195 · JF0118V00 · JF0118V0091 · JF0718V00 · 0291201870
Manufacturer part number JH-139 · Part Eazy SKU JH-139
This part cross-references / interchanges with the following part numbers:
What vehicles does the JH-139 distributor cap fit?
It's a direct-fit replacement for the 1988-1991 Mazda 929 (V6-3.0L) and the 1992-1995 Mazda MPV (V6-3.0L). See the Buyer's Guide tab to confirm your vehicle.
What does a distributor cap do?
It routes high-voltage current from the distributor rotor to each spark plug wire, delivering spark to the cylinders in the correct firing order.
How many terminals does this cap have and what are they made of?
It has 7 spark-plug towers set in the side position, with aluminum contact terminals.
Does it include a rotor, spark plug wires, or mounting screws?
No. The rotor, wires, gaskets, and screws are not included; installation instructions are included. Consult the vehicle service information for the correct fasteners.
What are the signs this distributor cap may need replacing?
Signs that may point to the cap include cracks, carbon tracking, corroded terminals, or a misfire. Diagnose the cause before replacing, since these symptoms can have other sources.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.