Standard Ignition Distributor Rotor JR-104
Standard Ignition Distributor Rotor JR-104 - view 2
Standard Ignition Distributor Rotor JR-104 - view 3
Standard Ignition Distributor Rotor JR-104
Standard Ignition Distributor Rotor JR-104 - view 2
Standard Ignition Distributor Rotor JR-104 - view 3

Standard Ignition Distributor Rotor P/N:JR-104

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$26.99
MPN: JR-104
Item Package Quantity: 1
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Standard Ignition Distributor Rotor P/N:JR-104
Standard Ignition Distributor Rotor P/N:JR-104
$26.99

Keep spark distribution crisp with the Standard Ignition Distributor Rotor JR-104, the rotating contact that carries high-voltage current from the coil to each terminal in the distributor cap as the distributor shaft turns. It installs as a direct-fit replacement for the 1987-1988 Chevrolet Sprint, 1987-1990 Mazda B2200, and 1989 Mazda B2600 — see the Buyer's Guide tab to confirm engine fitment for your vehicle.

  • High dielectric-strength engineering polymer: resists breakdown or arcing for long service life.
  • Noise-suppressing coating on the segment: helps prevent electrical interference with the radio and other electronic circuits.
  • Solid brass segment: resists pitting and erosion for extended life.
  • Stainless steel spring: maintains positive contact with the distributor cap brush while resisting corrosion and wear.
  • Shaft retention clips: locate the rotor properly on the distributor shaft.

Signs the rotor may need replacing include a cracked or carbon-tracked body, a burned or pitted brass tip, misfires, or hard starting. If a worn rotor is the cause of those symptoms, this replaces it.

Interchange: D653 · RTRA170 · EP780 · 12337493 · 96056629 · FE2518V05 · FE2S18V05 · EP780SB · 3331082032 · JR104T

This part cross-references / interchanges with the following part numbers:

D653, RTRA170, EP780, 12337493, 96056629, FE2518V05, FE2S18V05, EP780SB, 3331082032, JR104T

Frequently Asked Questions

What does a distributor rotor do?

It rotates with the distributor shaft and transfers high-voltage current from the coil to each terminal in the distributor cap, routing spark to the correct cylinder.

Which vehicles does the JR-104 fit?

It's a direct-fit replacement for the 1987-1988 Chevrolet Sprint, 1987-1990 Mazda B2200, and 1989 Mazda B2600. Check the Buyer's Guide tab to confirm your engine.

What is the segment made of?

It uses a solid brass segment that resists pitting and erosion for extended life, plus a noise-suppressing coating to help limit electrical interference.

What are signs the rotor should be replaced?

A cracked or carbon-tracked body, a burned or pitted brass tip, misfires, or hard starting. Diagnose the cause first, since these can stem from other ignition parts.

How does it stay in place on the shaft?

It utilizes shaft retention clips to locate the rotor properly on the distributor shaft, and a stainless steel spring keeps positive contact with the cap brush.

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